more guests you never knew about, or knew about but had forgotten, or knew about and remembered, on the simpsons

You better believe Julian Assange had a brief guest role in an episode (in fact, the 500th episode) of The Simpsons in I think 2011. Whatever the Finnish translation says above,* the actual line is 'you should get out less'. 

* google translate says it's 'you would stay at home more'.