Repulsion Gel (Portal 2)

A new gameplay mechanic added to Portal 2. This was the first of the three new gels added to the game. It gave you the ability to bounce wherever the gel was placed (by the use of portals). What did you guys think of the gel?

I enjoyed the concept of adding these gels that changed the way we interact with objects using portals. I really liked using them I combination with the Propulsion gels (the orange stuff). So yeah. :p