How about an even dozen in chronological order:

Umphrey's McGee- Mantis
Estradasphere- Palace of Mirrors
Porcupine Tree- Deadwing
The Van Allen Belt- Lactater Tots
Echolyn- The End is Beautiful
Secret Chiefs 3- Book of Horizons
Clouseax- Lagoon!
Ween- Quebec
Office of Strategic Intelligence
Mike Keneally- Dancing
Ben Folds- Rockin' the Suburbs
XTC- Wasp Star