https://sites.google.com/site/jsrsprojects/ – Specifically AndroidIR, but looks like some other interesting posts to check out, time permitting.
http://hackaday.com/2011/09/29/prototyping-a-bluetooth-to-ir-remote-control-translator/ – link to the above article, plus links to a few related posts.
The Logitech Harmony Hub and Harmony Smart Control are essentially pre-built, ready-to-use alternatives to the DIY models noted above.