For wasting time, I like Mahjong and Krashlander in games and Navy Seals in miscellaneous (is there a way to provide a Zune store link on a web page?). Also Optical Illusions Free, Urban Dictionary, and SexPro are good for when you're sitting in your doctor's waiting area. ArkWords is fun. For food shopping, Foodspotting seems good. Also check out Yo Mama Jokes.
I use the amazon kindle app for ebooks (i have a kindle). Wordament, chess4all, the onion 7, and textsfromlastnight as my time wasters. I pinned a onenote notebook to my homescreen as my note taker so i can access it if i forget my phone.