Amongst the R/D fics of dubious quality that I've been reading, I found this story that I really liked. (NOT badfic!)
Strange Bedfellows: A Comedy of Assumptions by Mad Maudlin
Harry and Hermione face down an unexpected conspiracy, a possible nefarious plot, wild rumors and much, much worse to save their best friend from a terrible fate...right?
This story was laugh-out-loud funny. The characterization is pretty loose, but in humour stories you can get away with that. And Crabbe and Goyle were the most adorable things ever!
[Hermione and Harry are plotting with Crabbe and Goyle]
"Listen, you two. Draco's gone mad. We need you to help us stop him...er, stop him getting expelled." Crabbe nodded gravely at this. "Meet us down here, at one o'clock in the morning. Can you do that?"
"Yes," Crabbe said earnestly. "We've got watches."
Goyle showed them his.
Read and enjoy.