Activating the pleasure center in my brain, analyzing the value proposition of enterprise level business decisions (meh), anything intellectually stimulating.
You
Tupac, Telefon Tel Aviv, Rufio, Green Day, Black Star, Mos Def, Talib Kweli, The Cure, Depeche Mode, Duran Duran, Outkast, Pharcyde, Souls of Mischief, Bjork, Mars Volta, Wu Tang, Jon B, Thievery Corporation, Death Cab for Cutie, New Edition, New Order, Everything But The Girl, Green Day, No Doubt, Miguel Migs, Louie Vega, Mark Farina, Derrick Carter, Sean Syne, Danny Tenaglia, Michael Buble, Nas, Old Jay Z when he used to rhyme fast, Common, Coldplay, Utada Hikaru, Les Nubians, Billie Holiday, Miles Davis, Ella Fitzgerald, Louis Armstrong, Air, Blink 182, Rufio, Zero 7, Esthero, Tony Toni Tone, Amerie, 112, Dntel, D'Angelo, Tyrese, Usher, Jodeci, Portishead, Radiohead, Sublime, Depeche Mode, Bobby Valentino, The Smiths, Tribe Called Quest, Kanye West, Maroon 5, Honey Luv, Chris Brown, Sigur Ros, Most 80's, 90's, guido freestyle, reggae, and oldies. Batucada/Bossanova/Salsa/Merengue songs I don't know the name of. Old records from the WWII era. It really all depends on the mood i'm in.
25th Hour, Almost Famous, Amelie, Boiler Room, Boondock Saints, Donnie Darko, Elizabethtown, Eternal Sunshine on the Spotless Mind, Garden State, Human Traffic, Kill Bill, Legally Blonde, Lost in Translation, Moulin Rouge, Run Ronnie Run, Swimming With Sharks, The Last Samurai, The Princess Bride, The Royal Tenenbaums, Vanilla Sky, Waking Life, Zoolander, Zombie Flicks.
Sci-fi and fantasy novels mostly...oh, and textbooks. Love those.