Well, just take the example from the GUI slider reference and from Animation.Sample and you're done.

private var hSliderValue : float = 0.0;
private var myAnimation : AnimationState;

function Start(){
    myAnimation = animation["MyClip"];
}

function LateUpdate() {
    myAnimation.time = hSliderValue;
    myAnimation.enabled = true;

    animation.Sample();
    myAnimation.enabled = false;
}

function OnGUI() {
    hSliderValue = GUILayout.HorizontalSlider (hSliderValue, 0.0, myAnimation.length,GUILayout.Width(100.0f));
}

Hi Bunny83

Thanks for the helpful gui slider example. I am trying take this script a bit further and being a novice both with Unity and scripting I'm having some problems figuring it out. I actually am not sure if what I'm trying to do is feasible

What I would like to do is have the slider control the playback of multiple AnimationClips

So, rather then specify a particular AnimationClip in the script I am trying to create and AnimationClip array and link the AnimationStates of the the various clips to the hSliderValue. I am trying to use this example

[http://docs.unity3d.com/Documentation/ScriptReference/Animation.html][1]

I tried amending your script like so

    animation.Sample();
    myAnimation.enabled = false;
}    

Ideas?

Thanks!!