What is very impressive about Mike Kafka is one year ago, no one outside of the Northwestern University coaches and players knew anything about this kid. In some ways this is the Kurt Warner story all over again, as Warner never played until his senior year and when he got his chance he made the most of it.
Northwestern wasn't predicted to be in the upper half of the Big Ten this past year and thanks in large part to Kafka's play, they had one of the better seasons in the Big Ten....and their bowl game versus Auburn was perhaps the most exciting barnburner of all the bowls. Passing for over 500 yards and 4 TDs versus an Auburn defense is impressive (any SEC defense for that matter), albeit the 5 interceptions might give one pause. But for a guy playing in his first bowl game to accomplish as much as he did in that game and to get his team within a whisker of winning it is extremely impressive.
What makes me believe that Kafka has a chance to be a good NFL QB is his toughness and determination...this kid is such a great competitor, he will do whatever it mentally and physcially takes to try to win the game for his team.
The added bonus is that, as Early pointed out, his fundamentals are sound coming in. Unlike with Tim Tebow, who possesses the exemplary kind of toughness and leadership skills that coaches dream of in a QB, Kafka does not have to alter his mechanics...he needs to keep honing his craft, take his game to the next level and make sure that when he gets his chance, the way Warner did, that he will be ready to make the most of it.
Because Kafka's Pro Day was celebrated nationally in the media and his showing in the East-West Shrine Game and at the combine were both quite impressive, if the Cardinals want him, they will most likely have to take him with one of their third round picks (#88, #89). It's a thin draft for QBs to begin with and I imagine that teams that are still looking to draft a QB will be searching their boards very diligently before the 4th round begins on Saturday morning.
While Kafka is a pocket passer, because he is so versatile and improvisational in the red zone, I could easily see Whiz create a Wildcat package for him. Kafka ran for over 200 yards versus Minnesota this past year...the kid can run. At the East-West Shrine game, on his game winning drive, he escaped what looked to be a totally closed in pocket and scrambled 7 yards right up the middle to the one yard line. Moments later he threw a perfectly arced TD to his TE (Quarless) at the back of the end zone that required just the right amount of touch...it reminded me somewhat of Vince Young's game winning TD to Kenny Britt...there were defenders in the area, and the ball had to be thrown up to the right spot.
In contract, you look at John Skelton of Fordham and no one in this draft class has a stronger arm. Plus Skelton has excellent size...Derek Anderson kind of size. But, when he was on the field in the East-West Shrine game, he was not the fireplug that Kafka was and while there were times when the ball came out of his hand so fast with the flick of his wrist that you sat there in awe...but the problem was he showed very little touch. On one key third down he had his TE well open behind a couple of chasing LBers, and instead of arcing the ball in to him with touch, Kafka sidearmed a quick flick line drive that was high and wide. Now with work, Skelton can learn to make those throws...the one thing he may not be able to change, however, is his laid-back presence on the field. The ESPN crew, Todd McShay and all were questioning his leadership abilities...not just in what they had seen during the week and in the game, but what they had heard from scouts who had covered his games. It's kind of curious too that a kid who was one of the top high school QBs in Texas, wound up going to Fordham.
Kafka sucks, and I'm glad I'm getting well-known on the issue 
