The Nats have brought in Todd Coffey and Jerry Hairston (Jr. lest you think the Nats signed some 60 year old for promotional reasons. Is Minnie Minoso still alive? Yes, yes he is.)
Since the comparison is being drawn, I feel necessary to note that Todd Coffey is NOT Matt Capps. Capps was a young reliever who had one bad year and several good ones. (the Nats were able to snatch him up because the bad one was his last one). Todd Coffey is an older reliever who has had one good year and several blah ones. Todd Coffey won't bring in Wilson Ramos (in fact Matt Capps shouldn't have brought in Wilson Ramos, so again - good job Rizzo). He's the guy you bring in in a scenario where you need a strikeout but don't mind a walk. Could he be the closer or the set up guy? Sure, I guess. But I think we all hope the Nats view closer as Drew Storen's job to lose, and Sean Burnett has earned the set up role.
Normally I don't like signings like the one for JHJ. He's done as a major league hitter. He doesn't walk or hit for power or hit for average. You don't want those guys playing a lot. However Hairston's positional experience is a benefit for the Nats. JHJ can play infield or outfield, he can run pretty well (though I wouldn't have him steal) and he can lay down a bunt. He can in essence fill 3 different roles in the modern bench - utility infielder, 5th outfielder, and pinch runner/bunter. It's often that the 3rd one overlaps with one of the other two roles, but to have all three overlap gives the Nats extra flexibilty. Hopefully the Nats use this advantage to keep an extra good bat on the bench (though I fear it'll just let them keep 3 catchers in the majors, though if that means Ramos and Flores I guess that's a good bat).