I’ve often sung the Reflector praise and today is no different. You sometimes end up in a situation with two assemblies; you don’t know which version is which and need to know specific differences between assemblies.

Enter the Reflector Diff plug-in by Sean Hederman which allows you to do text style diffs between two assemblies. A truly inspired use of disassembly and by  itself reason enough for the existence of Reflector 

Also be sure to check out Sean Hederman’s blog while you’re at it.