Seems to work from here and I regularly watch full episodes on YouTube. Had to jump through much smaller (that's harder, right?) hoops to get Graham Norton on the BBC.
Not quite an answer, but it was one sketch called Black Jeopardy in last night’s 3 hour long SNL 50th Anniversary special. Maybe that will help you find it.
The first part of the sketch was different (and worth a watch), but the tom hanks part was a literal rehash of the older version he did and not nearly as funny, so if you haven't seen it you're better off watching the old one.