Mx0, Toaru Majutsu no Index Recommendations
Both series deal with two guys who end up in magical situations by accident, one has a magic power of it's own tho', and one.. not. They get in to all kinds of situations involving magic and other powers, fights or just nonsense, both shows deal with a great amount of action, to both, there's also a side of comedy, drama and a bit of romance.
The main characters are similar in that they have the same power. Although there isn't as much comedy - they face similar situations.