We jumped the boat a bit by profiling the 106th-overall pick (Timothy Boyle) before mentioning the 82nd-overall pick, but the Senators used their second third-round pick to select Jarrod "Iron" Maidens from the Owen Sound Attack of the OHL.
Maidens (another new Sens prospect on Twitter, @Jarrod_Maids) is a 6'1", 178lb centre from Niagara Falls (or maybe Grimsby) who some thought he would be selected in the first round, but fell right down to the third thanks to some concussion problems that limited him to only 28 games last season. In those games, though, he scored 23P (12G, 11A). Scouts were impressed by Maidens, but his injury problems must have given them serious doubts.
According to Brendan Ross of The Hockey Writers, he's a hard-nosed players who can stick-handle through traffic, a description that makes me think of Nick Foligno and Zack Smith. Others have also said he's powerful, and has a heavy shot. Although he's not NHL-big, he's got good size for the OHL level, and has used that effectively during his first two seasons with Owen Sound.
It sounds like Maidens' upside, if everything goes right, is as a second-line player, but perhaps a third-liner might be more likely--at least according to one scout in The Hockey News (via Backhand Shelf). He's a big fan of Jarome Iginla, and it would be pretty great to see a kid like that in a Senators uniform...
Here's some background info on him, including a terrifyingly up-close-and-personal video clip: