Although Gerry set the standard, plenty of others have tried to copy his success. Here are some of the more famous attempts to "cover" Gerry's songs.
     

Baker Street

Foo Fighters (1997 -- My Hero CD single)
Livingston Taylor (1997 -- Ink)
Essential Interpretations (1998 -- Essential Interpretations)
Ray Hamilton (1996 -- Tango)
Covermania (1993 -- Covermania)
Esplosiva (1993 -- Esplosiva)
Undercover (1992 -- Check Out the Groove)
Carnival
Waylon Jennings (1987 -- Hangin' Tough)
Maynard Ferguson (1978 -- Carnival)
Rene Froger and Candy Dulfer
Jon Faddis (1978 -- Good & Plenty)
London Symphony Orchestra (various)
Royal Philharmonic Orchestra (various)

     
     

Stuck in the Middle With You

Jeff Healey Band (1995 -- Cover to Cover)
Dubonics (1998 -- On the Vibe)
Susanna Hoffs (1996 -- Susanna Hoffs)
Rod Jackson
Roger Clyne
Astropuppees (1996 -- You Win the Bride)
Chopper (1994 -- Supersmile)
Dale Ann Bradley (1999 -- Old Southern Porches)
Juice Newton (1993 -- Emotions)
DaVinci's Notebook (2000 -- Bendy's Law)
Leif Garrett (1978 -- Can't Explain)
John Dickson ("Stars in Their Eyes" TV program)
Pat Green and Cory Morrow
Sheryl Crow's All I Wanna Do -- not really a cover, but a real ripoff of the guitar riff (1993 -- Tuesday Night Music Club)

     
     

You Put Something Better Inside Of Me

Rod Stewart (1996 -- Handbags and Gladrags)
Roger Daltrey (1975 -- Ride a Rock Horse)
Kiki Dee (1973 -- Loving and Free)
Ted Neeley (1974 -- 1974 A.D.)
Raphael Ravenscroft (1978 -- Her Father Didn't Like Me Anyway)

     
     

Mary Skeffington

The Fureys (1994 -- Claddagh Road)
Olivia Newton-John (1974 -- If You Love Me Let Me Know)
Allan Clarke (1972 -- My Real Name is 'arold)

     
     

Her Father Didn't Like Me Anyway

Shane MacGowan and the Popes (1994 -- The Snake)
Jim McCann
Shanneyganock
Shane MacGowan and the Popes (1994 -- The Snake)
Raphael Ravenscroft (1978 -- Her Father Didn't Like Me Anyway)
The Fureys (1972 -- Dawning of the Day)
Andrew John (1972 -- Machine Stops)

     
     

The Right Moment

Olivia Newton-John (1985 -- Soul Kiss)
Barbara Dickson (1986 -- Right Moment)

     
     

I See Red

Jim Rafferty (the original)
Clannad

     
     

Blind Faith

Pointer Sisters (1979 -- Priority)

     
     

City to City

Barbara Dickson

     
     

Song For Simon

Mae McKenna (1975 -- Mae McKenna)

     
     
Whatever's Written in Your Heart

Robi Kahakalau (1999 -- Keiki'o Ka'aina)

     
     
Clear Day

Rab Noakes (2000 -- Lights Back On)

     
     
The Ark

Barbara Dickson

     
     
On The Way

Rob De Nijs
(supposedly translated the song into Dutch and recorded it as 'Ik hou van jou' (I Love You))

     
     
The Royal Mile

Barbara Dickson

     
     

And...

There's an album "Streetwalker Plays the Gerry Rafferty Songbook" by Streetwalker
(don't know the tracklist though)