Sexsmith is from Canada, he started to write songs after the birth of his first child. His voice reminds the listener of Elvis Costello.
Some people would say he sounds a bit whiny. But some would say his songs are mellow and marvelous. I (and my girlfriend) say they are pure bliss.
Ron Sexsmith recorded to date eleven albums since his first proper record in 1991. I linked my recommendations in his discography below.
1991: Grand Opera Lane
1995: Ron Sexsmith
1997: Other Songs
2001: Blue Boy
2002: Cobblestone Runway
2004: Retriever (listen to: Imaginary Friends, From Now On, Whatever It Takes, Happiness)
2005: Destination Unknown
2006: Time Being (listen to: Hands Of Time, All In Good Time)
2008: Exit Strategy of the Soul (listen to: This Is How I Know, Brandy Alexander, Brighter Still)
If you want to listen to him live (I had the chance to go to one of his concerts), try this collection of songs:
Ron Sexsmith - Live Collection
And don't forget: Support the artists - buy their music!