I don't know why, but my brother, when he was watching me play the patched english ROM of Pokemon White, thinks Minezumi is awesome. Now, as for me...
Favorites
Choroneko
Snivy (except for the name. Snivy? REALLY, Nintendo?!)
Nageki/Dageki
Sandile/Waruvile/Waruvial
Shinpora
DESUKAN!
Archeos
Zoroark
Those epic alien dudes
Sazandora
Cobalon, Virizion, Terrakion
MELOETTA!
Least Favorite
Not many complaints about the Pokemon, but Game Freak should know that basing a Pokemon (or any video game character) off of ICE CREAM is a horrible idea. It's just an epic fail. (I think I'll nickname the dude by calling him "Yummy")
Weird Pokemon that should have either waited til' gen 6 or introduced in the national dex.
Mamambou looks so much like Luvdisc, except bigger. That guy should have been a Luvdisc evolution, uncatchable in BW, but catchable in the (fingers crossed) RSE remakes.
Baffuron should have been a Tauros evolution, appearing in a possible Kanto remake or post-National Dex.
But, I don't know. GameFreak sometimes doesn't look back on past generations, I guess.