It is pretty neat, but I have yet to actually use it to fix a bug. The bugs that I cannot just spot tend to be bugs that occurred long ago in the program execution, something that record doesn't handle well (well, it could but it takes a lot of space to store all that info).

It seems that the only thing that reverse debugging helps me to do, i.e. find errors from not long ago, are something that is actually pretty easy to do. Maybe I am using it wrong.