Reading books recommended by whatshouldireadnext.com, being as silly as possible when no one else is around, finding new music to listen to, my family, trying to learn something new everyday, good conversation, phasing between abstinent and indulgent (I'll either give up soda or be addicted to it; I'll either try to be really healthy or sit around on my ass; etc etc), reading about languages, being myself, so on and so forth.
In no particular order:
Israel Kamakawiwo'ole
Diddy
Paul Wall
Tori Amos
Kelis
Jolie Holland
The Go! Team
Emiliana Torrini
McLusky
Sondre Lerche
Peter Bjorn and John
Nelly Furtado
Ben Folds
Devendra Banhart
Utada Hikaru
Bjork
CocoRosie
Junior Boys
Smashing Pumpkins
Beyonce Knowles
Fiona Apple
VHS or Beta
Tegan and Sara
Beck
Snook
Magnetic Fields
Gypsy Kings
Josh Ritter
Roisin Murphy
M.I.A.
Morningwood
???
Louis XIV
Men Women & Children
The Decemberists
Rilo Kiley
Pete Seeger
Bloc Party
The White Stripes
Maximo Park
Badly Drawn Boy
The Strokes
Peaches
Jenny Lewis
Lightning Seeds
Mika
Kelly Clarkson
Los Amigos Invisibles
Joanna Newsom
Tryo
Supersystem
Laura Veirs
Architecture in Helsinki
Sufjan Stevens
Interpol
???
Plies
Bebe
Patrick Wolf
Fergie
anything with Ben Gibbard
PJ Harvey
Feist
Akron/Family
Destroyer
Something For Rockets
Tokio Hotel
Blonde Redhead
Timo Raisanen
Amy Winehouse
Shakira
The Yeah Yeah Yeahs
Do Or Die
???
Timbaland
Benjamin Diamond
Tom Vek
etc etc etc and so on...