Tioti TV - gives you listings of what's on, and you can create your own custom lists & it will give you a link to previous episodes on iPlayer
Shazam identifies songs that are playing & link you to info about the song & to itunes so you can buy it
Lots of word games - Textropolis, wurdle, bookworm, WordJong, chicktionary.
Puzzle games - numba, blocked, Labyrinth, tetris,quadrum, bejewelled, mahjong, centipede,Theseus, fuzzle, jewel quest, bubble town,imaze, Maze finger, Tower of hanoi,hanjie (though it's called picross)
Solebon card games - it has about 50 solitaire games on the paid version
Books -Complete works of Jane Austen, several PG Wodehouse books and the iPhone 'Missing manual' which is useful though rather US oriented.
Just for fun - lolcats, koi pond, iPint and a totally pointless bubble wrap popping thing.
I also have an art program which would probably be very good if I had an ounce of artistic talent....