Here's what they have been so far:

• Session Ale #1: Scottish Mild/80 Shilling Ale
• Session Ale #2: English Bitter
• Session Ale #3: Southern English Nut Brown Ale
• Session Ale #4: Single Malt Ale
• Session Ale #5: Kvass - Russian Bread Beer (See Wikipedia entry)
• Session Ale #6: The Bitter End - Small beer from Gratitude Barleywine brewday
• Session Ale #7: American Wheat Hop
• Session Ale #8: Kvass 100 / Sourdough Kvass
• Session Ale #9: Grisette - an 1800's era French Coal Mining community beer
• Session Ale #10: Cherry Grisette - #9 but fermented with Tart Michigan Cherries
• Session Ale #11: The Bitter End 2007
• Session Ale #12: Best Bitter
• Session Ale #13: Here is GOSE again!  Sour mashed rare style (Gose) of German Wheat beer, spiced with Corriander and Salt
• Session Ale #14: Scottish 80 Shilling Ale, here and gone in record time
• Session Ale #15: S.W.I.L.L. (Stigmatized Wholly Indegenous Local Lager) - a Classic American Pilsner, recipe by local homebrew contest winner, Keith Kost.
• Session Ale #16: Brendan's Mild
• Session Ale #17: Dry Stout
• Session Ale #18: Cherry Stout
• Session Ale #19: Black Sumthin' (From Toaster's Second Runnings)
• Session Ale #20: Out of the Woods (Hoppy APA aged on Oak)
• Session Ale #21: Grisette Revisited (available Feb 14-March 14, 2009)
• Session Ale #22: The Bitter End 2008 (From Gratitude Second Runnings)
• Session Ale #23: Monkey Girl Dunkelweizen
• Sesison Ale #24: LOAF (Dark Rye Kvass w/ 60 loaves)
• Session Ale #25: Dark Mild
• Session Ale #26: Kölsch
• Session Ale #27: Belgian Black Ale
• Session Ale #28: Best Dressed Chicken
• Session Ale #29: The Bitter End II
• Session Ale #30: The Bitter End I
• Session Ale #31: Along Came a Cider
• Session Ale #32: Maybe Friday, Belgian Style Pale Ale
• Session Ale #33: Yankee Wanker (a too hoppy British style pale ale)
• Session Ale #34: Blabber 'N Smoke (Bamberg Rauchbier)
• Session Ale #35: Chocolate Covered Cherry Stout
• Session Ale #36: Nooner Scottish Ale
• Session Ale #37: Monkey Girl Dunkelweizen (revisited)
• Session Ale #38: Wheat Hop (revisited)
• Session Ale #39: Deserving Porcupine (Best Bitter)
• Session Ale #40: Wood St. Kvass
• Session Ale #41: BlackberRye Ale (that's not a typo, it's a fruit beer!)
• Session Ale #42: Slartibartfast - British Ale
• Session Ale #43: BlueberRye Ale (another rare fruit beer!)
• Session Ale #44: Big Pour Brew: "Weisse This Beer Sour?" Berliner Weisse
• Session Ale #45: Redd Up Red Ale
• Session Ale #46: Bitter End 2010
• Session Ale #47: RaspberRye Ale (okay, so they aren't so rare anymore)
• Session Ale #48: Czech Please!
• Session Ale #49: Steam Beer
• Session Ale #50: ...And sat down be cider
• Session Ale #51: Pale Ryder
• Session Ale #52: Drayman's Heather Ale (Scottish)
• Session Ale #53: BlackberRye
• Session Ale #54: Little Hop
• Session Ale #55: Wheat Hop (2011 Recipe)
• Session Ale #56: Monkey Girl Dunkelweizen (2011 recipe)
• Session Ale #57: Obstacle Delusion - English Mild, Optic Malt
• Session Ale #58: Tartan-ic Ale - Scottish 60 Shilling (TRASH Winner Calvin Perilloux)
• Session Ale #59: .... I give up.  I just can't keep track anymore.