I just watched TB last night and was amazed at how the script for CR pays homage to the Connery films. These are major spoilers for CR but point out some similarities.
Spoiler
The PTS- It's kind of like the PTS for GF and TB in that there is a very brutal fight to death and more down to earth than later PTS and the killing of Dryden screams of Prof. Dent in DN.
The whole Bahamas sequence is a throwback to TB. Bond's confrontation with Dimitrios at the poker table is comparable to Bond's bacarrat match with Largo and Solonge is kinda like Domino although more tragic.
Le Chiffre himself has some similarites to Largo. Both of them have a physical oddiy involving the left eye. Both have a private yatch. Le Chiffre's henchman Kratt is almost a carbon copy of Vargas (bald, slim, wears black and is the villains right hand almost always at his side). Le Chiffre also seems to have a bit of Kronsteen from FRWL to him.
There are alot more references I noticed but I'll leave that to you folks spot!