I know there are, but more specifically are there sites/applications I can use on the HTPC I am building where I can sort of "pay-per-view". We don't have or want cable or satellite but would love to be able to tune in to watch certain sporting events (in HD of course) especially. It would be nice to tune in for the Olympics, US Open, an occasional ball game, etc. but not have to subscribe to cable or satellite. Does this exist for HTPCs??