ET definately exists!...what you think we are the only intelligent beings in the galaxy? I run SETI because I believe there is life beyond the 3rd rock from the sun, and just to give my machines something to actually do.
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.