I have seen Keifer in many movies and the one that less of him was shown was Phone Booth. Because his voice is so distinctive, I knew before the walk away scene that it was him. His voice is so sullenly sexy that it is very hard to mistake with anyone elses. I don't watch his project "24" very much but the parts that I have seen, he is portrayed as pretty much a "renegade" doing whatever it takes to get the job done. I like that.
He has a "funky" style of dressing, it's okay. I'm hooked on