+1  A: 

As Patrick Karcher noted, you're missing a slash.

Also, you shouldn't have a space before :eq(1).

$('a[href=same/link/to/stuff/]:eq(1)');

Spaces in selectors imply that the item after the space is a descendant of the item before the space.

The way you had it, you were attempting to select the second descendant element of a[href=same/link/to/stuff/].

patrick dw
Ah it was the space!! Thanks so much!! May I ask why this makes a difference?
Alex
@Alex - Just updated my answer, but basically a space is essentially a descendant operator, so that jQuery looks for the item after the space which is a descendant of the item before the space.
patrick dw
Yep, the space. good catch.
Patrick Karcher