A Single Man is probably the most underrated of Elton's albums. Maybe it got lost under the roar of punk rock in the late seventies; maybe the 2 year break after Blue Moves and such an apparently low-key return was a mistake but there are some absolute gems here. Part Time Love was a great slice of pop, It Ain't Gonna Be Easy is dark and brooding and Georgia and Shooting Star are great tunes as well - all that and Song for Guy as well. Even the bonus track Ego (a minor hit over here when it was a single only release) is creative golddust.
At the end of the day, this is a great album of 70s soul influenced pop, and while it might not be quite as good as Elton's very best albums (Tumbleweed Connection, Madman, Don't Shoot Me, Goodbye Yellow Brick Road and Blue Moves) it sits right behind them and a long long way ahead of what he is doing today.