As 1990 begins its slide into history, Orange County is getting ready to bring in '91 with all sorts of bangs. Monday night's New Year's Eve offerings run the gamut from country to comedy and rock to Rossini:
* At the Coach House (33157 Camino Capistrano, San Juan Capistrano), moody roots rocker Chris Isaak will play at 8 and 10:30 p.m. During the second show, there'll be free champagne. Tickets: $19.50. (714) 496-8930.
* Eddie Money will rock in the New Year at the Celebrity Theatre (201 E. Broadway, Anaheim) starting at 8:30 p.m. Free champagne. Tickets: $32. (714) 535-2000.
* T.S.O.L., Stepchild and True Grit will play rock at the Marquee (7000 Garden Grove Blvd., Westminster) starting at 8:30 p.m. Free champagne. Tickets: $12. (714) 891-1181.
* The Crazy Horse Steak House (1580 Brookhollow Drive, Santa Ana) will present country music by Cimarron Creek, starting at 8 p.m. Admission is a bargain at $3. (714) 549-1512.
* Jazz lovers can catch Brandon Fields, Tony Guerrero and the Luther Hughes Trio at El Matador (16903 Algonquin St., Huntington Beach) starting at 8 p.m. Admission: $35, includes dinner. (714) 846-5337.
* Dee Dee McNeil will sing jazz and blues at Cafe Lido (501 30th St., Newport Beach) starting at 8:30 p.m. Admission: $15 for the show; $110 for the show with dinner and champagne. (714) 675-2968.
* The Dickies will be providing their customary high-speed high jinks at Bogart's (6288 E. Pacific Coast Highway, Long Beach) on a bill with Twisto Frumpkin and Sublime. Meanwhile, Orange County's Swamp Zombies will be playing in the club's Bohemian Cafe. The doors open at 8 p.m. Admission: $25. (213) 594-8975.
* The Nick Pyzow Band will play '70s-flavored rock at the Blue Beet Cafe (107 21st St., Newport Beach) starting at 9 p.m. Admission is free. (714) 675-2338.
* Luke & the Locomotives will play blues, and Johnny Monster & the Nightmares will play rock at Night Moves (5902 Warner Ave., Huntington Beach) starting at 9 p.m. Tickets: $10. (714) 840-6118.
* If you like your entertainment on the edge and strobe-lit, check out the Funhouse (at Old World, 7561 Center Drive, Huntington Beach). Along with live music by Arab and the Suburban Turbans, there'll be a "Humpty Dumpty Moonbounce"--a huge inflatable trampoline that can accommodate up to 20 people at once. The doors open at 8:30 p.m. Tickets: $12 in advance, $15 at the door. (714) 430-8426. (The Holiday Inn across the street will be offering reduced rates.)
* For those in need of head-banging, KNAC disc jockey Brian Shock will be host for a metal show at Peppers Golden Bear (300 Pacific Coast Highway, Huntington Beach). Leatherwolf and Roxanne will provide the amperage, starting at 8 p.m. There'll be door prizes and a champagne toast at midnight. Tickets: $25. (714) 374-2327.
* If, on the other hand, all you want is some good clean fun, Knott's Berry Farm (8039 Beach Blvd., Buena Park) will be offering a Christian rock and rap show with rockers Bryan Duncan, the Altar Boys, the Allies, Undercover, Brush Arbor, Guardian and Adam Again and rappers DC Talk, Washington, M.C. RG and M.C. Ge Gee. There'll be fireworks too. Tickets: $18 in advance, $20 at the door, good for unlimited use of park rides and attractions. The doors open at 7 p.m. (714) 220-5200.
* At Westminster Lanes' Press Room (6471 Westminster Blvd., Westminster) you can welcome the new year and roll back the clock at the same time with music by the Coasters, the Platters and Crest. There'll be a buffet dinner. A free bottle of champagne will be given to each couple. The show starts at 7:30 p.m. Tickets: $35. (714) 898-2058.
* For the Guy Lombardo crowd, the Harmonizers will be providing the melodies at the Anaheim Senior Citizens Center (280 E. Lincoln Ave., Anaheim). Tickets: $6. (714) 533-1981.
* The Guns 'n Garters Square Dance Club invites you to do-si-do at the Enders School in Garden Grove (on Springdale Street between Lampson and Chapman avenues) from 7:30 p.m. until about 12:30 a.m.. The $10-ticket price buys you dinner as well as dance floor space, and there'll be door prizes and a midnight toast. (213) 430-9024.
* On the upscale side, the Pacific Symphony will present a New Year's Eve Gala at the Westin South Coast Plaza (666 Anton Blvd., Costa Mesa) that includes a champagne reception, a concert (featuring soprano Evelyn de la Rosa) of works by Rossini, Puccini and Respighi, dinner and dancing. It all starts at 7 p.m. Tickets: $150. (714) 856-2787.
* Comedians Ritch Shydner and Bob Nickman perform at 10:15 p.m. at the new Brea Improvisation (in the Brea Marketplace, 945 Birch St., Brea). Admission: $25 (includes free champagne) to $50 (includes champagne, dinner and priority seating from 7:30 p.m.). (714) 529-7878.
* Comedian Mark Pitta will headline two shows at the Improvisation in Irvine (4255 Campus Drive). The first show starts at 7:30 p.m. and costs $45 (dinner included); the second starts at 10 and costs five bucks more, but you get champagne with dinner . (714) 854-5455.