With shows like 24 or Sopranos, i just wait awhile and buy the dvd box sets
Works ESPECIALLY well for 24.
Otherwise, i dont watch much TV, but when I do its usually:
Simpsons
Family Guy
Sex and the City (my housemate Jess MADE us watch it, so I like it now)
South Park
Scrubs
Anything quick and funny that i can walk away from halfway thru and not worry about it.