The Last.fm team has built an awesome iPhone application for their online music streaming service.
That might even get me to reestablish my account on their network 
Last.fm iPhone Demo from Toby on Vimeo.
Oliver just released his latest creation. A Mac OS X Dashboard Widget that displays the album covers of your latest played songs via Last.fm. What I love most is that, when you click on one of the cover pictures the Widget displays some more info about that particular song and also lets you send the song details to Twitter 
Download the Widget:
A new version of iScrobbler came out on April 3rd 2007.
Major changes in 1.5:
- iPod Shuffle support
- The currently playing track can be Loved, Banned, Tagged, and Recommended from the Stats window. (10.4+ only)
- Previously played Tracks/Artists can be Loved, Banned, Tagged, and Recommended from the Top Lists window. (10.4+ only)
- You can view and change your recently Loved/Banned tracks. (10.4+ only)
- Removed “Your Fan Rating” from the Artist Details, and replaced it with a listing of the Artist tags (fully clickable).
include('lastVenue.php');
This script pulls all events for a specific venue from last.fm and lists them in a simple, CSS styleable unorderd list. The script is meant to be included into a webpage and thus features none of the other HTML markup to make it into a full document. It basically only echoes out a headline and a few list items.
Oh yea, of course the script is Microformats enabled ;)
Note: the AJAX loding functions got skipped, because I'm really tired right now. Maybe they'll show up in version 2.0 ...who knows?
Demo