FanficRecs Agree
Anytime someone tries to diss Hufflepuff I like to direct them here, this story is one of my favourites. It's well written and the end is just so chilling, it gives me shivers every time I read it.
FanficRecs Seconded
It's very chilling. Wish it could have gone on for longer; there were a few parts that were slightly glossed over more than I would have liked. Still, well-written and I applaud the author for making Hufflepuffs awesome. It's surprisingly deep, too; it's almost like a warning against stereotyping kids by their personality traits from when they were 11. (Not that Tom changed much from the original, mind you.)
FanficRecs Awesome
Maybe it's just because I'm partial to Tom Riddle (I like his character a lot more than Voldemort's, simply because he's just not so one-dimensionally evil) but this was one of my favorite stories ever. A great way to think about what TMR could have done, had he not gone completely-batshit-insane because of all the Horcruxes. Anyway, here's him taking over the whole world without anyone the wiser.
FanficRecs Recommended
This fic has a fairly poetic way of saying "never underestimate Hufflepuff." As a fellow Hufflepuff, I concur (and may or may not be smug at the idea of a Hufflepuff!Riddle).