There are some really nice Holga photos in the Gallery. I know Thomas Bertilsson has some excellent photos that were taken with a Holga.
I must confess I have considered buying this Freestyle Holga Kit:

(1) Holga 120N - Black
(1) Holga Plastic Fisheye Lens 120
(1) Holga Telephoto Lens
(1) Holga Wide Angle Lens
(1) Holga Manual
(1) Swan Lab Mailer (Easy access to have your memories processed, additional charge applies)

Special Kit Price = $49.99 You save $24.97