Also, about the Hassan situation lately...
Hassan, as explained above, is a heel, complaining about prejudice since events like 9/11 took place, against his people (Arab-Americans, although Mark Copani is actually Italian-American himself). His manager, Khosrow Daivari, wrestled a few times, but is mainly a manager and usually speaks Farsi after Hassan rants during his promos. (He's been known to speak English on the show as well.)
Three weeks ago, Hassan called upon six masked guys to help him beat the Undertaker in a grudge match (Taker caused Hassan to be unofficially counted out from a six-man match for what was going to be a SmackDown! title, because both World titles were drafted to RAW at the time...Batista was drafted to SD! thereafter, making a SD! Title unnecessary). Anyway, an event occured on Wednesday/Thursday morning in London, as you well know, that made people very pissed off, although the segment was taped on Tuesday. People called Hassan a terrorist, when the guys under the masks were actually white and were simply assumed to be Arabs.
UPN, who initially let the segment air, told WWE that they didn't want Hassan to be on SmackDown! anymore, so WWE.com aired a promo (for the site only, not on TV) where Hassan came out to the crowd and called them all hypocrits for believing his associates were terrorists and Arabian, when they simply helped him beat Taker. He made a lot of sense to the smark community, but not to the general mark audience, who began chanting USA! against him,
after he reiterated that he was an American! This from the fans who chanted USA! at a Bret Hart/Yokozuna match, or a match full of Canadians and French-Canadians.
Anyway, WWE "killed off" his character, so to speak, at the Great American bash, when Taker last-ride'd him through the entrance stage to the concrete floor beneath (a floor panel was moved by Taker beforehand for this spot). Long then put up a promo on WWE.com saying that Hassan can go to hell (for what, I'm still not certain), or to RAW for all he cares. Since UPN only deals with SmackDown! this seems like the most sensible way to bring back Hassan, who was on RAW to begin with.
Anyway, more on Hassan. He spurred a shitload of running gimmicks on YTMND.com, where his entrance music would interrupt important events or events that had nothing to do with wrestling. Search for "Hassan" on
www.ytmnd.com for examples or search the forums here, plenty of them were posted.

This is because Hassan himself would always interrupt promos, starting with his theme music, which begins with a resounding "ALLLAAALLLEEEYYAAALLELEAYELELLALAEYEALELAELYALEA..."
It'd also a running gag here as well to "Hassan" threads that suck, or just randomly for fun.

I do a lot of the Hassan-ing actually.
EDIT:
First watch:
http://nobodyexpectshassan.ytmnd.com/
Then watch:
http://thisistheendoftheworldfolks.ytmnd.com/
Then, in any order...
http://muhammadhassan.ytmnd.com/
http://metalgearhassan.ytmnd.com/
http://hassanone.ytmnd.com/
etc. (they're everywhere)
Finally:
http://hassanator.ytmnd.com/