Most From wikipedia: pictures of all the Dr Whos!

(Watch it! Those are Darleks in the background!)
The First Doctor
William Hartnell 
1963–1966 

The Second Doctor 
Patrick Troughton 
1966–1969 

The Third Doctor 
Jon Pertwee 
1970–1974

The Fourth Doctor 
Tom Baker 
1974–1981 

The Fifth Doctor 
Peter Davison 
1981–1984 

The Sixth Doctor 
Colin Baker 
1984–1986 

The Seventh Doctor 
Sylvester McCoy 
1987–1996

The Eighth Doctor 
Paul McGann 
1996–2005 

The Ninth Doctor 
Christopher Eccleston 
March 2005–June 2005  

The Tenth Doctor 
David John McDonald
2005–2010 

The Eleventh Doctor 
Matt Smith
2010–2013

Twelfth Doctor
Peter Capaldi
2014–present