YouTube has quietly begun offering a variety of movies and TV episodes available for rental at youtube.com/store. After experimenting with $5 rentals of Sundance Film Festival movies this January, the site is now offering 48 hour rentals mostly between 99 cents and $3.99. Rental fees are paid through Google Check-out. Independent, Bollywood, Manga and documentary films dominate the charts so far. We expect a formal announcement from YouTube about the store soon, we were tipped off to its opening this morning by reader Ron Ilan, creator of children’s video aggregator site creator Totol. Gigaom’s...