Gizmoz, an Israeli startup that allows people to create realistic 3D cartoon avatars of themselves and embed them on other websites, will be getting a little mainstream attention at the upcoming MTV Music Awards in September.

On Monday, MTV, Taco Bell and Gizmoz will jointly announce a new website and promotion: users will go to tacobell.gizmoz.com and create a fifteen second audition of themselves doing anything they like. Taco Bell will select three winners and create a new thirty second spot with Gizmoz technology that will be played at the MTV music awards in September. The site is live now, but all content will be cleared or the Monday announcement (so wait until then to create an audition).

All auditions will be publicly available and viewers can rate them. The three winners will be paid and given a years worth of Taco Bell food (hopefully not all at once).

Gizmoz is an impressive and fun widget platform – and it’s something MySpacers in particular are likely to crowd to over time. This kind of exposure is great for the company…and we hear that Taco Bell is actually paying them for this, not the other way around.