Including row numbers in a table

["Daniel J. Sinder" <djsinder@gmail.com>]

I haven't used table formulas that much and I can't figure this one 
out.  I'd like to include row numbers in the table itself. 
Something like this:

   | Row | Data Column 1  | Data Column 2       |
   |-----+----------------+---------------------|
   |   1 | some data      | more data           |
   |   2 | some more data | even more data      |
   |-----+----------------+---------------------|
   |   3 | still more     | yup, you guessed it |
   |   4 | and more       | that's all          |


I'd like to use a formula for the first column so that if I move 
rows around using org commands, the row numbers can be easily 
re-calculated.  Note that I'd like numbering to continue 
sequentially across horizontal lines.

I've tried column formulas like @-1+1, but the horizontal lines get 
in the way.  And if every row needs it's own formula, it's hardly 
better than just filling in the numbers.

Can anyone suggest how to do this is a reasonably automated fashion?

Thanks,
Dan