Generic list of actions

gistfile1.cs

public class GenericActionList
    {
        readonly IList<Action<object>> _actions = new List<Action<object>>();

        public void AddAction<T>(Action<T> action)
            where T : class
        {
            _actions.Add(input => Invoke(action, input));
        }

        void Invoke<T>(Action<T> action, object input)
            where T : class
        {
            try
            {
                T inputAsT = input as T;
                if (inputAsT != null)
                {
                    action(inputAsT);
                }
            }
            catch (Exception ex)
            {
                throw new Exception(string.Format("Failed to execute action of type: {0} using input of type: {1}", typeof(T), input.GetType()), ex);
            }
        }

        public void InvokeAll(object input)
        {
            foreach (var action in _actions) action(input);
        }
    }