I'm a fan of using comments for methods invocation with explicit bool parameters' values (true/false) and nulls:
bool foo1(bool bParam)
string foo2(string sParam)
I'm sure it's very usefull for clarity of code.
But, there is an issue though. If I rename paramer's name using R#, comments'll leave unchanged. It's bad.
It would be REALLY nice if you added renaming parameters' names in comments too.