Does Reddit Need New Subreddits?

I think reddit needs a couple of new subreddits. One would be a joke/humor subreddit. The reason I am saying this is because the blonde joke that I posted on this blog yesterday made it to the reddit home page and got 118 votes with 68 comments. The link to that is here: http://reddit.com/info/2dqjc/comments
Some more useful subreddits would be pictures and videos, right now when someone posts a picture the subject is either
Picture of…..
Or
Subject..[Pic]
If you had a picture subreddit you would know immediately that all these links were pictures. So what do you think should we have more subreddits or would that be overkill?