Most comedians are regularly this on their account but TheTweetOfGod stands out.
Funnybandname only posts exactly what you think it would: funny made up names for groups of musicians. This user will quickly retweet any good suggestions given to it.
"Hot Dog Mortar"
"Zweihander and the Hairy Hellspawns"
The @sayakacorpse account. It's a bot that just tweets blank space every hour.
The AkariDaisuki account, a bot that takes a random tweet from someone it auto-follows and tweets out "わぁい(excerpt) あかり(excerpt)大好き"tl "Wai, (excerpt)! Akari loves (excerpt)!" Occasionally it will use some pretty amusing parameters for its tweets, resulting in Gratuitous Foreign Languages (English included) or naughty tweets. Some examples: