My personal recommendations, based on my judgment calls:
Thursday, 60 events: Victory Beer Breakfast (sick of beer breakfasts yet, Bruce?) at Metropolitan; the previously mentioned Dogfish Head events at Morton's and Alewife and the Brewers Reunion at Pratt Street Ale House; the "Garden of Infinite Pleasantries" fest with real ale and blues at Red Brick Station in White Marsh; Women and Beer at Max's (industry folks, now ladies showing off their assets); the homebrewing and barrel-aged beer seminars and tastings in Columbia; firkin of Flying Dog Single Hop Imperial IPA at Mahaffey's; Local Harvest "farm to table" beer dinner at Pickles Pub; former bartenders return to The Wharf Rat for night shift; and beer trivia nights at The Knotty Pine and Max's.
Friday, 59 events: Blues & Brews at 8X10 in Federal Hill; Bacon & Bombers at T-Bonz in Ellicott City; "Hall of Fame" Day at Victoria Gastro Pub; LOTS of liquor store samplings about; Blues, Brews & BBQ at Alonso's; pub tour of old Ellicott City; Druid Hill Park's 150th anniversary gala at The Maryland Zoo; several good beer dinners; a homebrew competition at Muggsy's Mug House; Weyerbacher's brewer at Hudson Stackhouse; and more.
Saturday, 36 events, largely overshadowed, of course, by the Chesapeake Real Ale Festival; a brown-ale homebrew contest at Ellicott Mills Brewing; the now-extinct(?) Unibroue Quelque Chose at Mahaffey's; brewery tours at Heavy Seas; fruit beers at Hudson Stackhouse; and tastings all over town.