23) Read World War Z by Max Brooks (one of the best books I've read... I read a lot of books).
24) Have heated debates at work about the plausibility of my theories on creating real life zombies while I should be working
25) Watch the Black Mesa teaser trailer over and over and over and over... I can never get sick of it.
26) Hang around forums such as this, L4D411 and SPUF.
Or wait, this is a joke OK... Do something outside!