I came across the dumbest code I’ve seen in a while at work today.

try  
{  
    return _Collection.Length;  
}  
catch (NullReferenceException)  
{  
    return 0;  
}

I found it because when debugging an asp.net page, I had enabled thrown exception breaks and this code was causing about 5 debug breaks for every page load…  Needless to say it has now been rewritten.