The questions never end. But today, I'm wondering...
Ya know how most Cakewalk DAWs come with those MIDI loop libraries?Well, is there anywhere I can find more of those for free? 
Thanks a bunch.

Here are some samplers which are free:

http://www.groovemonkee.com/en/free-midi


http://www.prosonic-studios.com/drumpatterns.aspx


IMHO it's always better to purchase loops as your giong to go through a lot of free one's to find usable content, oh and Google is your friend when you want to search for more.

I hope that get's you started in the right direction.

The Groovemonkey samples are great, very good sounding beats and all human-played. I have used a few of the free ones. If money were no object I would definitely buy their "complete" package. 

The web is full of free midi, in pretty much any style you can think of.
 
Get creative with it.