http://code.google.com/p/morelinq/issues/detail?id=60

MoreLinqNoConflict.cs

#pragma warning disable 1591

using System;
using System.Collections.Generic;

namespace MoreLinq
{
    namespace NoConflict
    {
        namespace DistinctBy
        {
            public static class MoreEnumerable
            {
                public static IEnumerable<TSource> DistinctBy<TSource, TKey>(this IEnumerable<TSource> source,
                    Func<TSource, TKey> keySelector)
                {
                    return MoreLinq.MoreEnumerable.DistinctBy(source, keySelector);
                }

                public static IEnumerable<TSource> DistinctBy<TSource, TKey>(this IEnumerable<TSource> source,
                    Func<TSource, TKey> keySelector, IEqualityComparer<TKey> comparer)
                {
                    return MoreLinq.MoreEnumerable.DistinctBy(source, keySelector, comparer);
                }
            }            
        }
        namespace EquiZip
        {
            public static class MoreEnumerable
            {
                public static IEnumerable<TResult> EquiZip<TFirst, TSecond, TResult>(this IEnumerable<TFirst> first,
                        IEnumerable<TSecond> second,
                        Func<TFirst, TSecond, TResult> resultSelector)
                {
                    return MoreLinq.MoreEnumerable.EquiZip(first, second, resultSelector);
                }
            }
        }
        namespace Zip
        {
            public static class MoreEnumerable
            {
                public static IEnumerable<TResult> Zip<TFirst, TSecond, TResult>(this IEnumerable<TFirst> first,
                    IEnumerable<TSecond> second, Func<TFirst, TSecond, TResult> resultSelector)
                {
                    return MoreLinq.MoreEnumerable.Zip(first, second, resultSelector);
                }
            }
        }
    }
}