I've been a Hollywood Undead fan from day one (and I'm not just saying that, if anyone remember's the songs "the kids" and "turn off the lights" or even just the "i must be emo song" on their myspace in the old days)
I am so proud of this record, I bought it twice from them when it came out. the song "young" is my favorite of all but I still love the rest of the record.
I can't really recommend any other band though since I only listen to HU and find the other kinda gross and inappropriate (I'm referring to ICP and Kottonmouth Kings really), at least I know HU's being real unlike the others in my mind. um, my friend has a band that's similar, if you want to check them out. they're called Scare Don't Fear and they're a local band from Rhode Island.
EDIT: I just remembered some rap rock bands and albums:
faith no more (the real pioneers)
lostprophets (the cd called para todas las putas celosas)
linkin park (an obvious one)