Eagle Board Design Question

How do you make those curvy edges for your boards? like the one on Arduino boards? all i can do is square edges and this seems boring.

In the board editor, use the arc options for the Wire tool to draw arcs:

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The Gadget Shield: accelerometer, RGB LED, IR transmit/receive, light sensor, potentiometers, pushbuttons

In the board editor, use the arc options for the Wire tool to draw arcs:

aren't those options for wires / tracks? I'm looking at edges of the board.

Wires, tracks, and board edges differ only in the layer they're drawn on. Anything drawn on layer 20 (Dimension) generally defines the edges of the boards (or internal cutouts, holes, etc.) You can use arcs just as well on Dimension wires as on Top, Bottom, etc. for wires and tracks.

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The Quick Shield: breakout all 28 pins to quick-connect terminals

Be wary that a lot of PCB fab houses will not accept boards that are not a nice straight sided shape.

Mowcius