Why aren't Science people funny?

I like science as much as the next guy, but it seems like so many of the science oriented radio or TV shows are simply unbearable because the host tries - and fails - to be funny. Examples of this are WNYC's (cancelled?) "Radio Lab", and the worst offender: Alton Brown's Food Network disaster "Good Eats".

The thinking is that most people think that science is boring so you have to entertain people while you teach. The problem is that for some reason science people aren't funny. Instead, they are "wacky". No one thinks wacky is funny except for 5 year olds and, well, science nerds.

Please science show hosts, you're not funny, so give it up.