Block Visibility Addon

This module gives greater control over the block visibility setting allowing you to do things like.

* Negate paths using a !

Negate paths using a !

You can easily say something like

products/*
!products/cheese/

The block will show on every products/* page, except products/cheese/

Use Regular Expressions

This is pretty simple, this allows you to use any kind of regular expression you wish to match to your path. It only requires using a # to start end end the expression.
Example

products/*
#catalog/[^/]+$#
search/*

NOTE: You cannot combine both Regex and Negate.

You can get pretty complex with what you want to do. With regular expressions you can pretty much match anything you want.