I've been using Last.fm since almost a year, and apart from small defects (mostly strange music changes like from techno to Mozart) I love the app.
One of the nice features it has is a simple API to interact with their servers and, for example, send your playlists from Winamp, Windows Media Player or even your iPod.
But last week, thanks to PedroAfa I found and tested a fantastic app, Last.fm Mobile. As the name may hint, it is a Windows Mobile version that allows to play Last.fm radios anywhere!
As I feel lazy today to write too much, here are some screenshots:



Beware that we are streaming music, if you aren't using wifi it may be quite slow (it buffers before playing so music shouldn't stop even on slow connections).