She coaches Harry on how to perform the Summoning charm before the Second Triwizard Task, she realizes how to use the Time-Turner to save Sirius (RIP), and she is literally the only reason Harry survives past book five.
In his defense, Ron helps Harry every chance he can get (when they aren't fighting), but never really imparts great wisdom to Harry.
Then again, maybe it’s best to leave the name calling up to Ron.
Harry is the first to realize that Hermione has ulterior motives and trusts her implicitly that she knows what she's doing.
In the movies, when Harry is about to make his final sacrifice to Voldemort, Hermione realizes instantly what he's about to do and volunteers to go with him.
In the fourth book, Rita Skeeter writes that Harry and Hermione are dating, leaving Ron angry and jealous at them both — while neither Harry nor Hermione get that mad at all.
In the fifth book, Cho Chang makes the snide comment, “Oh yes, I forgot — of course, if it was darling Hermione’s idea..." when Harry says Hermione would be joining their tea party.