- Don't let the cat out of the bag. (know this one)
De aap uit de mouw laten komen (The grand revealing)
De kat in de zak kopen (Buying a fraud)

- Wrap my brain around it (Know and have used this one)

In je kop stampen (Working hard to remember something)
Het kwartje valt (Having the Eureka moment)

- Cross a line (Know and have used this one)
Over de schreef gaan

- Fight fire with fire (Know and have used this one)
De brand blussen met olie (I'll let your imagination run wild on this one)
Vuur met vuur bestrijden
Oog om oog, tand om tand (Eye for an eye)

- Have a cow kick in the pants (Unfamiliar)
Je weet nooit hoe een koe een haas vangt (You never know how something might turn out)

- and obviously "drive someone up a wall" (Know this one)
Op de kast jagen (Teasing someone)
Stangen (Teasing someone)

- so be it
Amen (Is apparently literraly latin for, may it be so)

- wake up on the wrong side of the bed
Met het verkeerde been uit bed stappen

- start off on the wrong foot
Op goede voet staan (having an amicable relationship)

- A bridge too far
Een brug te ver ( And this is that famous bridge that both sayings refer to: http://nl.wikipedia.org/wiki/John_Frostbrug )