Here are a few. Please note that I do not include the unintentionally funny remakes (Wicker Man, Swept Away of Planet of the Apes) in this group. Also note that the abbreviateion RRMCM refers to "Remake Ruined My Childhood Memories":
Gone in 60 seconds (2000) - RRMCM. Nick-ol-ass Cage Coppola ruins one of my favorite action films from childhood (part 1). Throwing money and bad actors at a low budget classic will not improve it.
The Italian Job (2003) - Marky Mark, you are no Michael Caine (but Seth Green could be Benny Hill) RRMCM.
Around the World in 80 Days (2004) - The original wasn't that great, but it looks like freakin' Citizen Kane next to this film. Jackie Chan? Why oh why did you do this film and drag Karen Mok into the mess?
Get Carter (2000) - Sly Stalone, you are no Michael Caine. Hell, in this film you aren't even Marky Mark.
Alfie (2004) - Although Jude Law is better at being Michael Caine than Sly and Marky M., he still could not overcome this poor written and directed remake.
Arthur (2011) - A movie about Michael, Jude, Sly and Marky Mark getting genital cysts removed would be more interesting that this. RRMCM. Just who in this world thought that Russell Brandt could carry off such a charming role as Dudley Moore did?
The Day the Earth Stood Still (2008) - The "eco" sci fi thriller that has none of the charm or foreboding as the original. Mostly, it doesn't have Francis Bavier as a red baiting know it all. RRMCM
But the one that is the all-time worst is
MY SASSY GIRL (2008) - Not only was remake a horrid and shallow re-imaging of an great movie but it also marked the year (2001) Korea took over as the top romantic comedy leader. This also showed that by 2008, Hollywood could not properly remake a film or create a decent romantic comedy to save its life.
[B]uying DVD's is cheaper then spending my money on booze, drugs & hookers -- Harold Gervais