Do bear Electabuzz in mind though. I know it's an NFE, so it'll get ignored by some people, but it actually beats Raichu in HP, Defense, Special Attack, Special Defense AND Speed. Not to mention, they have the same ability, and Electabuzz has a larger movepool.
The useful moves that Raichu gets that Electabuzz doesn't are Nasty Plot, Grass Knot, Encore, Surf and Volt Tackle, but the list of moves that Electabuzz gets that Raichu doesn't is a bit longer.
But basically, if I see a Choice Specs Raichu, with Thunderbolt, Focus Blast, HP Ice and Grass Knot, I'd be a bit confused as to why the person isn't using an Electabuzz.
Nasty Plot alone is enough reason to use something as a sweeper over something with the same type, ability, and similar stats.
Chaizard is very useful, if used correctly.
In other words, with team support. Floatzel makes a GREAT lead with Charizard, as it outspeeds every single SR user in the teir, and can beat most of them as well.
My personal set uses Waterfall, Aqua Jet, Taunt, and (Move Rotates due to metagame shifts) On the rare occasion that Floatzel cannot beat the opposing lead, it switches out for later.
Without Rocks, which are a MAJOR weakness of Charizard, one particular set can rip NU to ribbons. One which no-one has mentioned.
Swords Dance.
At +2, even the bulky waters, such as Quagsire and Gastrodon, cannot switch in, take a hit, then take another hit before being KO'ed. Swords Dance Charizard dies to very few things. Without a Scarfer, or something such as Floatzel, or several priority users, SD Charizard is an instant win if it sets up.
Personally, I'd be backing a suspect test of Charizard. People haven't yet cottoned on to the fact that SR is more preventable in NU than anywhere else, and that can be majorly abused.
Also, LeadZard, anyone? I doubt anyone would waste time setting up rocks while Charizard is out, setting up DD/SD.
Now, for a few things I want to point out/ask:
1. The ladder seems dead whenever I go on Q_Q.
2. Anyone had any sucess with Kingler/Crawdaunt? Agility and DD respectivly are massive boosts for those two.