Mokey and Janice, both as my Muppet soulmates, and as my favorites from FR and TMS, respectively.
The Count is my favorite from SS, followed by Ernie and Grover.
Oh yeah, and I also love Gunge and Sprocket and Flange Doozer from FR, and Sam (2nd fave from TMS), Rowlf, Kermit, Statler, Beaker, and Piggy from TMS.
But yeah, Mokey, Janice, and The Count are my Top 3. lol