I think wii-like potential is a bit strong for LBP. IMO, the allure of the wii with families has more to do with the way you interact with the unassmuming little white box and the simplistic interface as anything. There have been adorable games before on other consoles and none have been a drop in the well to what the wii is doing now. Even if a commercial was to interest a more mainstream audience, that audience needs to get past the big black monolith, the scary controller, the maze-like XMB, and, of course, the price.
When are they releasing more software for the PSEYE? Imagine if they integrated the creation controls of LBP with PSEye! Think Minority Report meets LBP.