Not sure what group of people I boosted with are from here, but thanks to all for the help so far. Just over half way done with getting level 50, and two other stupid easy achievements to go. Employee of the month out of the way, that's the one I was not looking forward to. Just got done with about a 5 hour boosting session!
25k = May 29th 2009
50k = Feb 8th 2010
75k = Nov 4th 2011
100k - Aug 9th 2012
Gamerscore goal complete...working on my completion percentage now.
Looking to boost: Gears 3, Rainbow Six Vegas