I've always thought of myself as Christian and LDS, kind of in the same way that Catholics are Christian, yes, we have additional scripture, but yes, we believe in Jesus Christ, and as such, are "Christian". We don't believe that Jesus is the ONLY son of God, we believe all humans are sons and daughters of God, and that even Satan, the devil, is a fallen son of God. However, we do believe that Jesus it the only begotten son, or favored son, who atoned for our sons (bled in Gethsemane), died on the cross, was resurrected, and indeed will come again (we call this the second coming). Our prophet these days is probably most like the pope of the Catholic church, except that he is not chosen by vote . . . although I don't know EVERYTHING about what popes do. or at least that's how I explain it to friends.
What else we believe in in a very broad question, but perhaps the most controversial is the priesthood, and the power of continuing revelation to our prophet in this day (since the time of the reorganization of the church via Joseph Smith).