I'm just your basic middle-aged geek...I teach computer science, probably spend more time online than is good for me, and am unofficial tech support for most of my family.
Thoughts about SETI and SETI@home
It's an interesting conundrum: The number of possible extrasolar planetary systems make it very unlikely we're alone. At the same time, the vast scales of time and distance involved make it very unlikely we'll ever have any contact with ETI. Still, "very unlikely" isn't "impossible;" it's a long shot, but it's a long shot worth pursuing.
I've been crunching since 2001 for SETI Classic, recently switched to the BOINC interface and loving it. Currently dividing my crunch time between SETI, climate modeling, and searching for gravity waves.