Having rewatched Gladiator in March of last year, I was stricken by how similar Robin Hood was to Gladiator. Including star Russell Crowe, director Ridley Scott, and being set in the European dark ages, it's the same movie: professional soldier shows bravery; gets the shaft; just wants to be left alone; gets dragged into someone else's problems; shows up the King; blah; blah; blah. A technically well done movie, Robin Hood doesn't really serve a purpose - it's not historically accurate, it's not a great thriller, it's not a great swashbuckler; it's not a great romance; the comic relief is more silly than funny; and it's half an hour too long. I wouldn't even bother renting it.
I, do, however, recommmend searching out When Things Were Rotten, a Robin Hood comedy that ran for a few months on ABC in the mid-70s. It was produced by Mel Brooks and made about the same time that Brooks made Blazing Saddles and feels very similar. Need I say more?