DomainToModelMappingProfile.cs

namespace WebApi.OData
{
    public class DomainToModelMappingProfile : Profile
    {
        public DomainToModelMappingProfile()
        {
            Mapper.CreateMap<Movie, MoviePresentationModel>()
                .ForMember(m => m.YearOfRelease, x => x.MapFrom(y => y.Released.Year))
                .ForMember(m => m.AverageRating, x => x.MapFrom(y => y.Ratings.Average(r => r.Rating)))
                .ForMember(m => m.Actors, x => x.MapFrom(y => y.Actors.Select(a => a.Name)));
        }
    }
}

gistfile1.cs

return movieRepository.GetAll().Project<Movie>().To<MoviePresentationModel>();

gistfile2.cs

return movieRepository.GetAll().Select(Mapper.Map<MoviePresentationModel>);

Movie.cs

namespace WebApi.OData.Domain
{
    public class Movie
    {
        public virtual int Id { get; set; }
        public virtual string Title { get; set; }
        public virtual DateTime Released { get; set; }
        public virtual ICollection<Person> Directors { get; set; }
        public virtual ICollection<Person> Actors { get; set; }
        public virtual ICollection<UserRating> Ratings { get; set; }
        public virtual Administrator AddedBy { get; set; }
        public virtual byte[] CoverImage { get; set; }
    }
}

MoviePresentationModel.cs

namespace WebApi.OData.Models
{
    public class MoviePresentationModel
    {
        public int Id { get; set; }
        public string Title { get; set; }
        public int YearOfRelease { get; set; }
        public double AverageRating { get; set; }
        public string[] Actors { get; set; }
     }
}

MovieRepository.cs

namespace WebApi.OData.Repositories
{
    public class MovieRepository
    {
        static Context context = new Context();

        internal IQueryable<Domain.Movie> GetAll()
        {
            return context.Movies;
        }
    }
}

MovieService.cs

namespace WebApi.OData.Services
{
    public class MovieService
    {
        private readonly MovieRepository movieRepository;

        public MovieService(MovieRepository movieRepository)
        {
            this.movieRepository = movieRepository;
        }

        public IQueryable<MoviePresentationModel> Get()
        {
            return movieRepository.GetAll().Project<Movie>().To<MoviePresentationModel>();
        }
    }
}