Try It Bite #2

I prefer substituting Greek yogurt
for sour cream because of its
great texture. 

Love to add sour cream to your favorite foods and recipes?  Try plain yogurt or plain Greek yogurt instead.
2 tablespoons of sour cream contain 58 calories, 5 grams of saturated fat, which is 25% of the recommended daily allowance, and though it is contains the word "cream," it is not a significant source of calcium (i.e. less than 1% of your daily calcium needs).  
Two tablespoons of plain yogurt, which gives the same great twang as sour cream, has only 16 calories and 0 saturated fat.  It also is a great source of protein and calcium.