#Mathematica 10
m[[#, #2]] &
Usage
m = {{13, 10, 4, 0}, {3, 12, 7, 8}, {15, 1, 14, 6}, {9, 2, 11, 5}}
m[[#, #2]]&[2,3]
7
Explanation
m[[#, #2]]&[2,3] is a shortened form of Part[m,{2,3}], which gives the contents of the second row, third column.