In the cap world, NHL teams need value deals. Teams hand out monster contracts at the beginning of free agency, and hope to get full payment for dollars spent. Often, that is not the case. This forces NHL GMs to find 'end of the roster' players who can step in and play more prominent roles as required.
Mark Arcobello is such a player. Although he played only half a season in Edmonton this year (and is now injured), Arcobello played extremely well on the club's 2line.
This is a really good half-season for the rookie. Now, the Oilers get a plug and play option for $600k. That's really good roster management, getting someone who can play up and down the lineup for basically the minimum. It's a good deal for Arcobello because he gets a roster spot (or must clear waivers to be sent down), which increases his chances of staying in the NHL for a full season.
Arcobello's negatives (basically just one: size) are offset by the fact that he appears to be an actual NHL player. He's a funny player in many ways, because some of his positives (he hits, separates players from the puck, wins battles) aren't normally associated with a player of his size.
He's found money. Never drafted, signed to a minor league deal and worked like a bugger to get here. Mark Arcobello is impossible to cheer against, and this is a good day.