Fix element on window scroll
Two things I noticed/would recommend:


Cache jQuery variables such as $(this) and $('.fixMe') to prevent redundant lookups during each scroll event.
Implement an event debouncer/limiter, this is because the scroll event fires a lot more than you likely think it does. There are many utils/plugins to achieve this such as:

https://github.com/cowboy/jquery-throttle-debounce
http://unscriptable.com/2009/03/20/debouncing-javascript-methods/
http://documentcloud.github.com/underscore/



I even wrote a very simple one: http://limit.gotsomething.com/. My site will show you why debouncing/limiting is useful.

Other than that looks good to me!

cheers,
Marc.