The Scotland international joined on deadline day from Blackburn Rovers.
The Scotland international has a proven track record of scoring goals at this level and for that reason he did not come cheap.
He cost Boro a fee in the region of £9 million, according to the BBC, in a deal that finally came about after initially looking like collapsing.
One man who thinks he will be a hit is Tony Cascarino.
Speaking to Sky Sports News earlier today (16/02/2016) he expressed his thoughts on the deal and how it should propel Boro to Premier League promotion:
"He made it quite clear in his transfer policy, bringing in Jordan Rhodes, that he wanted more goals. They have struggled of late to get them.
"Okay they didn't score last night but Jordan Rhodes will get goals for them. He'll be a good signing. Middlesbrough are a good side and they showed that last night, how good a team they can be.
"They take their chances they probably win the game quite comfortably. Short of form right now but by the end of the season they'll be fine."
It came after he drew a blank against Leeds last night, although did have a goal cruelly crossed out after the ball had been wrongly adjudged to have left the field of play.
He also hit a late chance straight at Leeds goalie Marco Silvestri that he would have felt he could have done better with.
He did score a crucial goal against MK Dons recently however and most fans seem excited to see if he can continue to score crucial goals in the Championship run-in this term.