Nokia has been handing out the N900 for selective "artsy" uses lately through its "Push" program, and the folks at Tinker it now! sure seem to have put their model to good use. They've paired the device with all matter of nostalgia, including a Rolodex, FM radio and a 3D Viewmaster. Our favorite by far, however, is the Speak & Spell hack, which puts the gargantuan Speak & Spell keyboard to good use in penning text messages for the N900 -- which displays them in the classic font and