Tony's Exponential Spiral:

This space curve was produced using the following Maple commands:

> x:=rho*3*sin(t);
> y:=rho*3*cos(t);
> z:=t/6/Pi;
> rho:=exp(t/3/Pi);

                          x := 3 rho sin(t)


                          y := 3 rho cos(t)


                                      t
                            z := 1/6 ----
                                      Pi


                                         t
                         rho := exp(1/3 ----)
                                         Pi

> with(plots):
> spacecurve([x,y,z],t=0..8*Pi,axes='NORMAL',
>   numpoints=1000,thickness=2);