So what is your favorite and the one you think is strong?

I think that OU Gengar@Life Orb w/ Focus Blast, Shadow Ball, etc. is really godlike.
My favorite UU Pokemon would have to be Special Physical Slowking.

uhh whats OU and UU

OU = Opponent use
UU= you use?

OU= Overused
UU= Underused.

I would take a trip to smogon.com to learn about this

oh well I'm lost

Crocune is annoying if you don't have a good special Phazer

UU would have to be something like..... Scyther i guess, it's been a while since I've done UU or played period lol.

In my opinion, I would say that Heatran is the best OU pokemon, because it is one of the best counters against scizor, and scizor is on a lot of teams that I've battled on smogon, platinum, and PBR. My favorite UU pokemon is an offensive ludicolo w/ life orb and swift swim, with the moves energy ball, hydro pump, rain dance, and ice beam.

In my opinion these are the best(They are the best in my teams)
OU = Rhyperior
UU = Aridos

You may think they suck, but they can be surprisingly good

Muhahahahaha!

OU for me would be a tie between Gengar and Heatran, in UU, my choice will have to go to Crobat.

OU: Gengar
UU: Aggron

I think Aggron could be good in SOME way.

I've killed so many pokemon with aridos it's not funny...

Actually I think that Marowak is the best uu poke. It gets 560 atk if you give it a thick club.