Molly's Pub!!!! 509 Main St Downtown. I used to work the doorman at the nightclub next door and I'd always walk in there before work and get their Guinness for $3. I think they had it at that price for Thursday-Saturday nights though. not too sure...
That's a great suggestion, and I did post about my experience(s) there a couple weeks ago. I like that bar, it's more "working man" than its counterpart, McElroys, across Main.