Best Crossover Fanfict You Ever Read?

Do You Know a Crossover fanfict as Good as this or close to this http://www.fanfiction.net/s/3084565/1/Trogs_and_Wristbands

There is Millions Of Crossover Fanficts But all i want are fanficts as good as these so tell me some crossover fanficts you really like both cartoon anime comic books and video games or all together

I know a lot of interesting crossover fanfics.
Serenity, Nevada (Firefly / Buffy : Vampire Slayer) - http://www.fanfiction.net/s/4552093/1/Serenity_Nevada
A Reader in the Stars (Firefly / Star Trek) - http://www.fanfiction.net/s/5262078/1/A_Reader_in_the_Stars