What do you get the sports fan who wants to bowl 300 without practicing? Try the RC900, a remote-control bowling ball invented by San Antonio, Texas-based 900 Global. The bowler steers the ball by adjusting the position of a weight screwed onto a threaded shaft inside the ball.The product is being marketed to young children and those unable to bowl because of physical limitations. The ball itself is surprisingly nimble, as evidenced by a user-submitted video (see below) in which one of them slaloms smoothly around four chairs set up along the lane before striking the headpin. Of course, no one ever said a perfect game was cheap; 900 Global’s ball retails for $1500. [youtube]http://www.youtube.com/v/31vdI-tlyX0&color1=0xb1b1b1&color2=0xcfcfcf&hl=en&feature=player_embedded&fs=1[/youtube][youtube]http://www.youtube.com/v/6kVWKzAaax8&color1=0xb1b1b1&color2=0xcfcfcf&hl=en&feature=player_embedded&fs=1[/youtube]