The best video library / player app on Mac that I've used. Looks great, plays any video format you throw at it, does a fantastic job with recognizing movies and pulling metadata, has a ton of settings you can adjust to your liking.
I did, however, find two very minor annoyances that I wish they'd fix:
1. I use a trackpad instead of a mouse, and when I scroll down vertically on the Infuse home page it sometimes starts scrolling horizontally instead, for a brief moment. So instead of scrolling down it scrolls horizontally in the Recently Added section or Picks of the Day or whatever my cursor happens to be hovering over.
2. I wish the Infuse window would remember its size after you close a movie that's in full screen. Here's what I mean: make Infuse window maximized (by going Window > Zoom), now launch a movie, do NOT go full screen, close the movie by clicking Close in the top left corner of the player - Infuse window is still maximized, perfect. Now try this instead: launch a movie, enter full screen, now press Close in the upper left corner, and you'll find that the Infuse window is now also in full screen and if you exit out of full screen the Infuse window will get resized to the size of the movie you were just watching instead of being maximized (Window > Zoom).