Uh, oh. Now you've invited people to go on about their campaigns. At least, that's how I choose to read it.
I've played quite a few of 'em. As to the ones I've used, the campaign I've been running recently (since February) has been mostly taken from Dungeon magazine adventures and WotC free web-based material. Since it's beginning, if I remember correctly, it's gone like this:
(A) "Ever-changing Fortunes," from Dungeon #85 (scaled down for 1st-level characters)
(B) "Of Sound Mind," from Fiery Dragon (scaled up slightly for 2nd-level characters)
(C) "The Shalm's Dark Song," from Dungeon #87, (scaled down for 3rd-level characters)
(D) "The Ettin's Riddle," a free web-based adventure, with an additional dungeon crawl tacked on built off one of the WotC "Map of the Week" features, including the "No Loose Ends" encounter from the
Book of Challenges.
(E) "The Last Hunt," from Dungeon #94.
(F) (coming next) "The Dungeon of the Fire Opal," from Dungeon #84 (scaled up for 4th- to 5th-level characters). I offered them a lead on "Totentanz" (Dungeon #90) as well, but they got starstruck over the chance to hunt a dragon.
Notice that somehow I can rarely quite work exactly the character level of adventure I want into where I want it in the storyline. I'm particularly glad that Dungeon includes notes on scaling the adventure for that reason.
In general, I'm working on building up a running subplot ((A), (C), and (D) so far) around drow and giants using published material
except for the "against the giants" series, as a sort of intellectual exercise. With some troglodytes ((A) and (B)) for variety. Along the way I seem to also be coming back repeatedly to sinister goblins ((B) and (E)).