Incoming Links query.

Is there a site that allows you to quickly find out how many incoming links a partcular site has?

Thank you.

Don't know about site,
But in google type link:www.yourdomain.com
In Yahoo search for linkdomain:www.yourdoamin.com
In MSN search for link:www.yourdoamin.com

And they will reproduced maximium url links to same domain

HTH