RealPokerTraining.com is the online poker training school staffed by WSOP bracelet winner (and main event runner-up) David Williams and a number of online poker superstars - guys better known by online ID's such as "BodogAri", "gotskillz?" and "NSXT2" instead of the names their mothers gave them. The site has been in operation for quite awhile now and has well over 200 hours worth of videos to watch. They cover the usual assortment of tournaments and cash games, including both no limit hold them and Omaha.

Videos are big and sharp enough to easily see what's going on (which means they're serving up significant bandwidth, so kudos for that). Most of the videos are recordings of online play as it happened or of analysis after the fact. The "live" recordings of tournament and cash game action are valuable ways of getting some insights into the thought processes of the pros as they play.
"Real Poker Training" has discussion forums where the site's pros act as moderators on a pretty wide variety of poker topics. Each pro has a blog on the site and occasionally they author other articles.
Visit RealPokerTraining.com for more details about the site's offerings and current cost of becoming a member. They'll give you a pretty good discount if you pre-pay for a year's worth of access. They also offer "scholarships" to those players who sign up for one of several poker sites and fulfill some playing requirements.