Remember Clear, the to-do app from Realmac Software with the impressively different user interface? It's a cross-platform favorite of the TUAW staff, with versions available for OS X (US$6.99) and iPhone ($1.99). Well, the guys at Realmac are going to build in support for the Leap Motion gesture-based controller, and they've provided a video demo featuring the ever-popular Nik Fletcher.
There's no exact timeframe for the Leap Motion-enabled Mac version, other than "later this year