I love so many pokemon from Gen V I'll probably miss a few, but I'll try.
Foongus, Joltik, Litwick, Klink, Tynamo, Snivy, Servine, Serperior, Samurott (why does everyone hate on it?), Deerling, Vanillite, Vanillish (i love how out of place they are. Also they're pretty cute.), Zekrom, Volcarona...