Everyone who ticks him off gets a $26,000 phone bill.
Hes won the Publishers Clearing House Sweepstakes three years running.
When asked for his phone number, he gives it in hex.
Seems strangely calm whenever the office LAN goes down.
Somehow gets HBO on his PC at work.
Mumbled, Oh, puh-leeeez! 295 times during the movie The Net.
Massive 401k contribution made in half-cent increments.
His video dating profile lists public-key encryption among turn-ons.
Instead of the Welcome voice on AOL, you overhear, Good Morning, Mr. President.

And the Number One sign your co-worker is a computer hacker…

You hear her murmur, Lets see you use that VISA now, Professor I-Dont-Give-As-In-Computer-Science!