You spelled both of his names wrong, man.
I love these shows, and I was going to name my favorite, but there's just so many to choose from... Donahue, the Carson of trash. Springer was boring early and unentertaining late, but he was great in the middle. Maury's wild child shows are the best. Montel brings a lot of variety into his shows (reminds me a bit of the Patty Winters Show from American Psycho). But if I had to pick one, it'd probably be Geraldo.
Worst... Oprah's hit and miss, but that's really for chicks anyway. I suppose I'll say Dr. Phil, he's only entertaining in a 7th Heaven kind of way, and then not too often.
I've never heard of this Trisha person either.