I dunno, Toy Story 2 was pretty fun, and I am looking forward to Toy Story 3.
Alladin 2 sucked, because they didn't have Robin Williams doing the Genie. They at least brought him back for Alladin 3.
The Rescuers 2 I thought was pretty well done. George C. Scott doing the voice of the villain...can't beat that (except if you had James Earl Jones).