An oldie and a goodie. Pick five - no cheating and saying "I can't decide". Here are mine (bear in mind my tastes don't include much from outside the last five years or so, as I was either not born yet or just musically clueless when it comes to most stuff before then):
1. Bloc Party - Silent Alarm
Fresh, original, catchy, lyrically precise - awesome album.
2. The Killers - Hot Fuss
Worth buying just for Mr Brightside alone.
3. Idlewild - Warnings/Promises
Thanks Rich - that's all I have to say about this one.
4. Green Day - American Idiot
Contains some of my favourite guitar riffs of all time.
5. Guns 'N' Roses - Greatest Hits
Contains the rest of my favourite guitar riffs of all time.
And before someone says it, yes, I know the last two shouldn't be there. But then, I've always had bad taste.