Yeah, Nvidia's Tegra line of mobile processors is pretty exciting, and will be getting the quad core treatment later this year, but don't forget about the competition - namely, Texas Instruments. TI chips have powered most of Motorola's Android products to date (excluding the upcoming ATRIX / BIONIC / XOOM), but Nvidia ended up beating TI to the punch in the marketplace for multi-core handsets and tablets.
Fear not, though: Texas Instruments just announced its OMAP 5 line of mobile processors (there aren't even any OMAP 4 devices out yet), and they're truly ridiculous. Four cores? It's been done before, you say - but not like this.