Make sure you put a big rag under the housing before taking the bolts out. It'll save you a ton of clean up time after you're done. Even with it draining back to the pan, a decent amount of oil remains in the filter housing.

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Current Bimmer
2004 X5 4.4i Sterling Grey Sport/Premium

Past Bimmers
1991 318I Alpine White
1995 740I Alpine White
1991 525I Schwartz
1998 323IS Scwartz
2004 330CI Cabrio Titanium Silver Metallic
1995 540I Schwartz
2000 Z4 3.0 Titanium Silver
2000 330ci Coupe Titanium Silver