"TestDriven.NET" has a great feature called "test with debugger". Is there anything like this in ReSharper?
Tried googling this, but can't find anything.
If you mean, can you run a test in debug with breakpoints then yes you can do that in ReSharper.
http://www.jetbrains.com/resharper/features/unit_testing.html
Just wanted to add, that in VS2012 there's now a built-in feature "Debug selected test". It does exactly the same.
PS. Actually, I (personally found that vs2012 is so good it almost doesn't need Resharper or Productivity-Power-Tools... It's quite good out of the box.. Sorry, just a personal opinion.