Originally posted by MatthewPapa 
LOL. That list is SO long! Nearly all of the games that I play are on it. I am not going to be installing SP2 any time soon... 
You might want to re-read the title.   
MAY behave differently != will behave differently.  That just means that they're going to run a little different.  That does not mean that anything on that list will not run properly.  Stop being so damned paranoid and install the damn service pack already.  Several programs that I use are on that list, and I have 
yet to see them crash.
btw, there is a known issue concerning windows update v5.  On some systems, SP2 b0rks the scanning engine by unregistering msxml3.dll.  This is a very simple fix by going to your run prompt and typing in the following:
regsvr32 msxml3.dll
That will re-register the DLL and windows update will function normally.