This weekend, there's something exciting happening in every corner of Monterey County. It's an especially big weekend in Big Sur: both the Big Sur International Marathon and Nepenthe's 60th anniversary celebration are this weekend. Friday Big Sur's classic restaurant, Nepenthe, celebrates its 60th birthday today! The party goes from 3pm to 10pm. There will be belly dancers, fire dancers, live music, readings from a history of the restaurant, and - naturally - birthday cake. Another big anniversary takes place in Monterey tonight, as classic comedy troupe Firesign Theatre celebrates their 40th anniversary at the Golden State Theatre. The show starts at 8pm, and tickets are $35, $55 and $75. Pac Rep's production of Man of La Mancha at the Circle Theatre in Carmel enters its final weekend. 7:30pm; tickets are $28 for seniors; $20 for students, teachers and military with ID: $7 for children and $38 for the rest of us. CSUMB's World Theater presents Howlin' Blues and Dirty Dogs, a musical celebrating blues legend Willie Mae "Big Mama" Thornton. 7:30pm; tickets are $25 at the door. Saturday Learn all about marine science at the Moss Landing Marine Laboratories (MLML) Open House, from 9am to 5pm. There will be activities including a marine touch tank where children and adults can meet ocean creatures in the flesh, guided hikes, seminars about marine science topic (check out the seminar schedule), and many other activities. There's also a raffle for many prizes, including artwork, scuba gear, jewelry, books, gift certificates to many area businesses, and more! All proceeds from the raffle benefit MLML; all other events are free. 9am-5pm, 8272 Moss Landing Road, Moss Landing. Celebrate the Asian heritage of Salinas with the Second Annual Asian Festival in Chinatown. Watch folk dancers and Taiko drummers, and eat delicious Asian food. Admission is free. 11am-4pm, on Soledad Street and California Street between East Lake Street and Market Way. Take to the open seas at Monterey Bay Sailing's demo weekend. Head out with a licensed skipper onto beautiful Monterey Bay. 11am-4pm, $25 per person. Head down to Soledad's Inn at the Pinnacles for the 2009 Pinnacles Wine Festival. Sample wines from producers throughout the Chalone Appellation while eating food from five-star restaurants. 11:30am to 4pm, $60 per person; a portion of the proceeds benefits the Richard H. Graff Wine Scholarship Fund. Enjoy a beautiful hike, plus epic poetry and evocative music as the Robinson Jeffers Tor House Foundation presents "Rediscovering Point Lobos: A Guided Walk with Poetry Readings and Musical Interludes" at 1pm. Admission to the walk is free; meet at the Whalers' Cabin Museum near the Whalers' Cove Parking Lot. (Note: parking within Point Lobos State Natural Reserve is $10.) The St. Lawrence String Quartet presents chamber music composed by Haydn, Mendelssohn and John Adams at the Sunset Center in Carmel. 8pm; tickets are $52, $39, $34 and $29. Blues musical Howlin' Blues and Dirty Dogs appears in its final night at CSUMB's World Theater. 7:30pm; tickets are $25 at the door. Pac Rep's production of Man of La Mancha at the Circle Theatre in Carmel hits the stage for its final Saturday night. 7:30pm; tickets are $28 for seniors; $20 for students, teachers and military with ID: $7 for children and $38 for the rest of us. Sunday It's the big day! The Big Sur International Marathon takes to Highway One. Cheer on athletes as they run from Big Sur to Carmel. Live music at various stops along the way will also encourage the runners. Remember, Highway One south of Rio Road will be restricted starting at 4am and closed from 6:15am to 1pm; there will be caravans from the Crossroads Shopping Village south at 8:45am and 11am. The Moss Landing Marine Laboratories (MLML) Open Housecontinues! Meet the ocean's denizens in the marine touch tank, take a guided hike through the dunes, learn about marine science at an informative seminar (check out the seminar schedule), plus much more. Buy a raffle ticket to support MLML and win a fabulous prize! All proceeds from the raffle benefit MLML; all other events are free. 9am-5pm, 8272 Moss Landing Road, Moss Landing. The Monterey Bay Aquarium presents a celebration of Latin culture with Día del Niño. Events include mariachi performances, folk dances, performances from El Teatro Campesino, a craft room, and chances to win prizes, as well as bilingual feeding programs in English and Spanish. Admission is free for children 12 and under. It's never too late for Earth Day. Visit the California State Parks Earth Day celebration at Custom House Plaza in Monterey. Green businesses and vendors will have booths throughout the plaza from 10am to 4pm. Free. Live your seafaring dream Monterey Bay Sailing's demo weekend. Licensed captains pilot Monterey Bay Sailing's sailboats. 11am-4pm, $25 per person. The Cooper-Molera Adobe Garden presents an "Open Garden Day" that includes garden tours, historic gardening techniques, and art activities in the Cooper barn. 11am to 3pm. Free. Watch jaw-dropping midair acrobatic feats as Cirque Le Masque comes to the Sunset Center in Carmel. 2pm and 7pm; tickets are $35 and $45. Native American actor Robert Greygrass presents traditional stories, Pow Wow style singing and music at the Golden State Theatre. 3pm, $10-$20 donation. Man of La Mancha dreams the impossible dream for the last time. Pac Rep's production of the famous musical plays at the Circle Theatre in Carmel at 2pm and 7:30pm. Tickets are $28 for seniors; $20 for students, teachers and military with ID: $7 for children and $38 for the rest of us. As always, there's so many things going on in Monterey County this weekend that we can't list them all! Take a look at the Monterey County Weekly's online calendar for even more events.