I really wouldn't consider ER "reality tv"...that would be considering like all dramas reality tv and if that were the case...I really couldn't pick.
Love: Big Brother, Survivor, The Apprentice, Laguna Beach, Beauty and the Geek, Average Joe
Hate: That one show..Marry my dad or whatever? Weird...and there was one a while ago about couples that didn't know each other getting Married, the viewers voted(on Fox), and then there was another one on Fox that had WAY too much drama, and they all played in pairs, but I don't remember the name.