They are all my favorite, but here are some choices from skimming and hitting the RANDOM button.
We're Goin' to Hawaii! http://www.sheldoncomics.com/archive/090323.html
Tech Supportin' Gramp http://www.sheldoncomics.com/archive/090416.html
Flaco's Adventures in Hollywood (or "CSI Cleveland") http://www.sheldoncomics.com/archive/060619.html