Given the sheer size of the universe I think its highly probable there's life on other planets. I really like the idea that when you're looking up at the stars, somewhere out there, someone else is doing the same thing. Probably wondering if somewhere out there someone else is doing the same thing.
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.