imagebot is an IRC bot that links random images from a given subreddit. It is designed to sit in a channel and be queried for images.
How do I get imagebot in my channel?
/invite imagebot - If you are a channel operator or have invite privileges, just /invite imagebot to your channel as you would any other user.
What are the commands?
!image SUBREDDIT - Links you a random image that was posted in a specific subreddit, where SUBREDDIT is the name of the specific subreddit.