After Meds I went on to songs like Pure Morning, Every You Every Me, Taste In Men, Special K, so I'd say Without You I'm Nothing and Black Market Music, then their first album.

Listening to their live performances is really fun, check out Live in Paris or the iTunes Live albums.

I didn't like Battle For The Sun my first listen-through for some reason, but now I am absolutely in love with that album. My least favorite songs are the first three on the album, however, so if they put you off, don't worry it gets so much better.

Placebo are awesome, highly influential for me, I'd just absorb it all and enjoy!