Asset Resolution Division (ARD) is one of the parts of GMAC that features prominently in the mortgage business. It services B and C loans, deals out loansforpeoplewithbadcredithistory.org.uk mortgage backed securities, and buys and sells REO property. Among other things, it's also playing with an ExtremeUnifiedProcess.
Litle and Co (http://litle.com) is using XP on a large scale, with 40+ developers (not counting QA and DBA) and about 3500 UnitTest suites. And, as of September '12, they're hiring. --RobMandeville