A titan arum (aka corpse flower) at the Milwaukee Public Museum is expected to bloom the week of January 17:
When the museum's other corpse flower bloomed in 2008, thousands of sinus-challenged visitors stopped in for a whiff and a gag. That belch-producing bulb teased audiences by springing up almost overnight to a height of 7 feet and then saying "Hosta la vista" by faking its own death. It resurrected itself and gave off a fragrance that has been compared with everything from rotting flesh to used baby diapers.
You can read more at Another corpse flower expected to bloom at Milwaukee Public Museum at the Milwaukee Journal Sentinel, or check out the museum's Titan Arum page (they've got recent images, and will reportedly have a stinky cam operating soon).