1) Bart B More...more of his old-school stuff with a banging beat, simple keyboard track and electro/warp bass line. Love his new stuff too, but I can't get enough of his older material. His new track "Lay Around" was just released today on MadDecent blog, think that sorta style. I love it!
2) Laidback Luke, for obvious reasons.

So dynamic and diverse at the same time in so many of his tracks. I'm not too big a fan of his "lighter" stuff (a-la Cindy Lauper remix, Beyonce bootleg) but even then he still manages some sick tracks like his Bellatrax - I Can't Help Myself remix. Then you got a little heavier stuff...Drop The Pressure, Need Your Lovin, Show, Been a Long Time. Then you got this a bunch of awesome more "electronic" tracks, Hynotize, Great Fashonista Swindle, Mary Go Wild remix etc.etc. Then you have PURE bangers like My GOD, Fly or Bounce remix, BLAU!. Iunno, I can't really think of something he hasn't done, haha.
3) Afrojack. 1 word. SICK. He incorporates afro-rhythms and beats ridiculously. How I Like It, Disco Man, Show Me Love remix, Toyfriend w/ Guetta. BOOM boomboom BOOM BOOM. His tracks are just straight dance-floor movers.
Honorable mention: Bingo Players. They're sick, except some of their stuff just seems a little bit too "plain" to me. I'm sure live it sounds the way it's supposed to sound a club sound system, but Carl Tricks is pretty similar to their style and I'm starting to like him just as much too.
Err..maybe I should start listening to more artists that aren't Dutch. If only the rest were as good as the Dutch...
As far as deadmau5 goes, I like him and all but I don't understand all the hype around him. It's obvious he's talented and he's pretty good at what he does, but it seems like people are either balls-deep on his dick, or just don't like the guy for no apparent reason. He's still an artist, he still puts on a show, and he still loves what he does. If people don't like what he does, then don't buy/listen to his music, it's not that difficult.
All in all...boomskboomskboomskboomsk