BJ's is the main hub for live local music, Fredonia rock bands, Indie, etc. Not to mention specials for every night of the week. Tequila Tuesday (Dollar Shots), Quads on Thursdays (4 shots, 4 dollars), Saturday dollar pints from 3-8 and free hot dogs, as well as dollar well drinks and bottom shelf shots all night long.
Sunny's is the one and only dance venue. It feature's a DJ, a large dance floor, a long bar with many specials, pool tables, and huge crowds on the weekends after ten. They recently began featuring a 5 dollar fishbowls. Essentially 5 shots for 5 dollars. Anybody want to dance?!
Heenan's Pub is a favorite for many locals because it is a traditional Irish Pub. You can find your Irish family crest on a map next to the dart boards. 5$ pitchers and friendly bar tenders make it a good time for all. If you frequent the bar enough, or if a bar tender appreciate's your compliments or tips they'll flip you a wooden Heenan's coin that is redeemable for a free drink.
Liberty's is a bar located in a residential area. Students hardly ever go near the place, but usually the student bartenders are so happy to see someone their age that they will give you some great deals. Everybody smokes indoors and there is a big room with pool tables/games/etc.
The best place for specialty beers and micro brew, as well as a rooftop patio, live music, and great food. Ellicottville Brewing Company (EBC) is the place to be. They feature many house beers and this is the place to purchase growlers. Bring them back for a cheap refill anytime.