Comcast Xfinity Blast here, 50Mbps down and I think 5 up. I can't think of any reason I need 50 but we do use Netflix, Vudu, YouTube, ESPN3, Hulu, and Amazon Prime Instant Video with three HDTVs. Previously we had AT&T U-verse up to 24 and that worked great.
I certainly have no complaints with the ISPs here, speed, reliability and minimal downtime. Prices are competitive with the best I have seen mentioned nationwide with the exception of Google Fiber, which is a great deal.