Here's one just for starters from Crisco's site:

http://www.crisco.com/basics/metric_con.asp

There was a time when many people thought the entire world would convert to the metric scale. While most of the world has, America still has not. Metric conversions in cooking are vitally important to preparing a tasty recipe. Here is a simple conversion table that should come in handy.

Volume
1/4 teaspoon......................1.25 ml
1/2 teaspoon.......................2.5 ml
3/4 teaspoon.......................3.75 ml
1 teaspoon..........................5 ml
1 tablespoon......................15 ml
1/4 cup.............................62.5 ml
1/2 cup............................125 ml
3/4 cup............................187.5 ml
1 cup...............................250 ml

Weight
1 ounce........................28.4 g
8 ounces.....................227.5 g
16 ounces (1 pound).....455 g