What are some good apps for listening to music when working out?

Personally, I prefer a streaming app such as SoundCloud when working out. It offers an unparalled music stream, without interruptions from advertisements. You can create personalized playlists or listen to 2-3 hour DJ sets; talk news podcasts, if you like

What iPhone applications and websites exist for discovering new iPhone applications?

Here we go..For GAMES:Toucharcade.com - this is the ultimate resource for iPhone games. They have news, photos, videos, and forums for both released and upcoming games.Pocketgamer.co.uk - great for many mobile gaming platforms.Fingergaming.com - Gamasutra for mobileslidetoplay.com