I don't know much about her, but Adele is a newcomer from the UK. Inevitable and unnecessary comparisons to Amy Winehouse aside, she's neat. She has more of a Joss-Stone-soulfulness meets a Patsy-Cline-melancholy to her. A great, effortless voice.
I should note I found out about her via Perez Hilton. Say what you will about tabloid culture and its obvious negative impact on the world, his site constantly promotes little-known artists and has introduced me to a lot of very fine music - That's gotta count for something.
Look into Adele's album, 19.
Best Moment: "Best For Last" - Simple, great vocal, rollicky.