Google@Mcgill
Yes! We've done it. McGill is now using a Google Search Appliance as its main search engine backend, which is the main reason I have been so busy in the last while.
Despite early hardware issues and a few bugs I faced in the caching engine and XML APIs (most of which have been or are being addressed by the Google Enterprise team), I have to admit that it's been one of the most motivating and enjoyable projects I have handled at McGill.
You can try it out for yourself on our main search page.
We also enabled other areas, such as our advanced course search, and classified search.
This is of course only the tip of the iceberg, since the architecture is quasi-infinitely extensible through the feeds and OneBox concepts (both of which we already use). And as usual, I already have a head full of ideas on how to further leverage the enormous amount of digital content on campus.
Fun times ahead!