If you are looking for a good magazine reader I like ZINO
works great I read MacWorld on it every month.
is a really interesting (and free) way to read your FaceBook and Twitter feeds, as well as some other news.
I also really like the Global
apps, they let you watch the show that you missed last night, it streams to your iPad
And finally I am a big fan of Carcassonne
if you have never played this game and you enjoy strategy board games you will love it. Also it features a great multiplayer online feature as well as some really innovative single player versions.
oh and if you have little kids (like I do) SpellBoard
is a great way for your kids to practice the weekly spelling words that they have to learn.