My Favorite's = Lunatone - Love the design, stats, and movepool.
Blaziken - Friggin' awesome, plain and simple.
Camerupt - Keep it away from Water and it can reek havoc!
Least Favorite's = Luvdisc - My God, what a terrible pokemon, I was really hoping Alomomola would be it's evolution, then it might not be so crap! (Although, it isn't much better...)
Chimecho - Not even worth the effort to try to find.
Illumise & Volbeat - I REALLY hate these Pokemon, Volbeat's design is OK but something just bugs me about Illumise, not to mention they both have crap stats.
I have more but this should be enough.