'Two & A Half Men' & 'Always Sunny' Stars -- Nicest Divorce EVER

Somebody should tell "Two and a Half Men" star Melanie Lynskey Hollywood divorces are typically mean, ugly and humiliating ... search Sherri Shepherd, Master P, Kevin Hart, et al.

Lynskey and "Always Sunny in Philadelphia" star Jimmi Simpson just finalized their divorce ... and it's the nicest set of divorce docs we've ever read.

Neither one hired a lawyer. They worked everything out themselves -- with a little bit of help from a mediator.

Neither wants spousal support. As for splitting assets ... they've actually included a line promising not to take "unfair advantage" of each other.

The couple filed for divorce in 2012 -- citing irreconcilable differences.