Is it only me?
I've been waiting for a long time to have mac minis with 9400m for Boxee. Ok, it does not work *yet*. But isn't GPU acceleration in ffmpeg the next step? I've seen messages in ffmpeg mailing list about working patches for ION platform acceleration with 9400M and ffmpeg. My guess is that we're pretty close to this.
Right now, mini/atv/iMac wont play most HD 720p/1080p videos. Especially if we are talking about Matroska containers or high profile bitrate. IMHO, standard GPUs such as 9400M ION platform will benefit a lot from future versions of ffmpeg/xbmc and, off course, Boxee.