I had wonderful luck with Remicade! I've had to move on due to loss of response, but I am not the norm in that case. While I was on it I had no side effects and felt great. It's a wonderful drug. Try it, and if it works, enjoy it... If not (unlikely) keep trying. Like MMcKenna said, there are other variations out there to try.
PS I also started Remicade before tapering off steroids.
--40 year old female, dx as UC in '04 (1st symptoms in '03), switched to Crohn's in '05, 1 fistula, crohn's colitis, limited to large intestine
--rejected (reaction/didn't work): Asacol, AZA, 6-MP, MTX, Remicade, Humira, prednisone
--methylpred - finally off 6/15/08, tried Prochymal in Phase III study (can't wait til it's approved!)
--started Tysabri 3/21/08, started Xifanan 5/24/08
--single mom to 10-yr-old girl