Perfect Debute Albums

How could I forget?! Joss Stone, The Soul Sessions. Classic!!

+1 for Joss Stone. Unfortunately she had a serious sophomore and junior slump. Senior effort much better...not up to her debut, but still, much, much better.

Tatw- I gotta' agree. Mumford and Sons is one killer debute!

Swamp - agreed on the next two from Joss Stone! I've not listened to her fourth. I'd have to also call out her guest appearance on the Jeff Beck, Live at Ronny Scotts (GREAT video) is...well,....memorable (oh my, oh my...very memorable)! Made you yearn for more than just the single song. What a voice! Also great on that same DVD is Imogen Heap doing "Blanket".

...back to debuts...

Has anyone already mentioned Kate Bush, The Kick Inside ?! - she was 19 and most of the songs were written when she was much younger.

Yet another Mumford supporter. Best debut that I can recall in well over a decade.
I'll also add The Feelies eponymous first record to the list.