Another fave of mine, probably not a proper idiom: "you got less chances than a one-legged man in a kick-ass contest"
Some more common idioms:
- it rings a bell => this reminds me something
- it's my bread and butter => it's something I know how to treat
- Stop beating about the bush => err, help! How would you explain this? Stop dicking around?
- To be on cloud nine => to be very happy
- To call it a day => to give up
- To go to the dogs => to be riuned (not sure it is the EXACT translation)
- As fit as a fiddle => in a pretty good shape
- I stick to my guns => I won't change my mind
- Draw the line = > to set a limit
- To put it in a nutshell => to sum up
- A pain in the neck (or ass) => is something/someone very tedious
- Hit the road => start a trip
- Pull yourself together => stay calm, don't let your feelings contro you (what a crappy translation, ahah)