KT Tunstall
Whatever you think of iTunes faults, it is SO cool when you can visit the Music Store, search for an artist and buy/download an album and be listening to it in about a minute.
I just bought the KT Tunstall album "Eye to the Telescope" after seeing her amazing one-woman-band performance on a talk show recently.
Not being musical at all I found her performance seriously mind-blowing.
Making a good experience great were the facts that:
a) the album only cost $8.91, for 12 songs and
b) it included a music video from the Today show which is now on my Video iPod allowing me to educate my peasant friends next time I visit. :D