couple of great local-brew places to check out:
Pratt Street Ale House ~ great English-style ales, brewed in-house. located a stone's throw from Camden Yards.
The Brewer's Art ~ Belgian-style, great food and atmosphere
Max's is worth the trip, for selection alone. service can be a bit spotty, though. often over-crowded.
Metropolitanl ~ in Federal Hil, have yet to get there, myself, but I've heard great things
Wharf Rat ~ in Fell's Pt, just down the alley from Max's. historic B'more bar. they have all of the Oliver Ales (Pratt Street), plus a good selection of other drafts and casks.
edit... just saw that this thread was almost a year old. d'oh!