Intimidating MONKEY

public static List<telement> Interleave<telement>(params List<telement>[] pvParamLists)
{
    // if nothing is provided we'll simply return an empty list
    if (pvParamLists == null) return new List<telement>();
 
    int listCount = pvParamLists.Length;
 
    // offset map indicating current position in a given list
    int[] pointerMap = new int[listCount];
 
    // count total elements
    int resultSize = 0;
    foreach(List<telement> list in pvParamLists)
    {
        if (list != null)
        {
            resultSize += list.Count;
        }
    }
 
    // create our result list
    List<telement> interleavedList = new List<telement>(resultSize);
 
    // will quit when finished
    while (interleavedList.Count < resultSize)
    {
        for (int x = 0; x < listCount; x++)
        {
            if (pointerMap[x] != -1)
            {
                List<telement> currentList = pvParamLists[x];
                // skip null or empty lists
                if ((currentList == null) || (currentList.Count == 0) || (pointerMap[x] >= currentList.Count))
                {
                    pointerMap[x] = -1;
                    continue;
                }
 
                interleavedList.Add(currentList[pointerMap[x]++]);
            }
        }
    }
 
    return interleavedList;
}