I was actually...impressed by his performance on the Practice. Supposedly he's in the new spin-off that starts next season as well. I think part of his character's idiosyncrocy, saying his name "Danny Crane" is to keep the Star Trek freaks (like us) from thinking 'Captain Kirk!" all the time.
It's working.
Last time I watched an original series episode I kept on hearing "I'm Danny Crane" in my head.