When most Americans think of where to catch up with episodes of their favorite TV shows on the Web, they more than likely think of Hulu, the online video site owned by NBC, News Corp and Disney that offers free viewing of TV broadcast shows and archive movies. Second to Hulu would probably be YouTube.

But not Fancast. Despite being owned by the largest U.S. cable TV operator Comcast, it doesn’t even make the top 10 video sites in the U.S., according to comScore data. (Hulu is No. 5). One of the ways Hulu became better known was by launching a national TV advertising campaign which kicked off during this year’s Super Bowl TV extravaganza. Hulu’s user numbers jumped after those ads — and Fancast hopes for a similar boost.

Fancast has dubbed its debut TV campaign “See It For Yourself” and will feature a series of five spots with recaps of shows including CSI Miami, Glee, NCIS, How I Met Your Mother and Gilligan’s Island. Three TV spots will debut on CBS and also on targeted national cable networks. See the Fancast/CSI ad here: The campaign also features an online push and an outdoor drive with interactive bus shelters around the San Francisco area.

In truth, beating Hulu might not be Comcast’s biggest prize. It’s more likely to have its eye on its On Demand Online /TV Everywhere initiatives, which aim to make popular cable shows available on demand to paying subscribers. Fancast will be one of Comcast’s key platforms for that new service when it fully rolls out so building awareness of the site now is important.

(Photo: CSI Miami’s David Caruso/Reuters)