My vote's divided between smallville and Enterprise, both have excelent starting seasons. Although I think 24 is absolutely brilliant, its far too traumatic to get many new series

Not seen Alias, but I can't honestly say I'd be that bothered about any of the others. 24 was fun while it lasted, but there was so much repetition in the first season I can't see it being great in the second.

My vote goes to Six Feet Under.