Certain
Ratchet & Clank - Should be there soon
Heavenly Sword - Should be there by November at the latest
GTA4 - no brainer
GT5P - unless reports were wrong this will see a million as soon as it launches in Euro
Resistance 2 - highly likely
MGS4 - no brainer
FIFA 09 - should sell about 1.5 mil
Pro Evo Soccer 9 - should get close to 2 mil
Motorstorm 2 - Even though it's not bundled a lot of people want Motorstorm with Split Screen and better load times, it should get there easily.

Possible
Rainbow 6 Vegas 2 - should get better sales than the 1st one and we should get Euro numbers this time, I believe this one will get to a million
Hot Shots Golf 5 - A very good chance to make it with Euro and America launch
Burnout - Should sell well until the rest of the year
SOCOM Confrotations - if combined with downloads it's certain.
Madden 09 - Bigger install base + a more competent version this year = million seller
WWE Smackdown 2009 - Bigger install base, should easily make it
GH Aerosmith - People that bought GH3 can buy just the standalone, should make it on all 4 systems
Rock Band - I believe it'll crawl to a million by Christmas when the 360 version is passing the 2 million mark
Infamous - will pass 1 million LTD, but don't know if it'll do it in 2008
Fallout 3 - This is very close to certain
Haze - Depends if it lives up to the hype
White Knight Chronicles - All dependent on Japan's numbers for this game
The Last Remnant - All dependent on Japan's numbers for this game
Little Big Planet - Depends on if it'll be released this year and if it lives up to the hype

Killzone 2- Depends on if it'll be released this year
FFXIII - Depends on if it'll be released this year
GT5 - Depends on if it'll be released this year
RE5 - Depends on if it'll be released this year

Tekken 6 - Depends on if it'll be released this year WW.

Soul Calibur 4 - Depends on if it'll be released this year WW.

Street Fighter 4 - Depends on if it'll be released this year WW.

Star Wars Force Unleashed - Apparently this has a lot of followers....

On the Bubble
Oblivion - Dependent on Euro's up to date numbers
Need for Speed Carbon - Dependent on Euro's up to date numbers
Madden 08 - Can it keep an average of 8k until Madden 09? And up to date numbers on Others
WWE Smackdown 2008 - Can it keep an average of 10k until WWE Smackdown 2009?
MLB08 - 5% chance
Kane & Lynch - With price drops it might actually craw to a million, it actually saddens me to say that this might make a million and the 360 version might get to 1.6 mil or so. Awful game with great sales
Warhawk - Dependent on dowloadable numbers

Unreal Tournament 3 - This game is supposed to have legs, it'll need an average of about 15k till Dec31st to make it...here's hoping.

Lair - Missing Euro data and just became a platinum hit in Europe according to Diomedes, I give it a 1% chance of making

Silent Hill V - I doubt it, but others have suggested it might.

Dragon Ball Z - I doubt it, but others have suggested it might.

Tomb Raider Underworld - I doubt it, but others have suggested it might. 

Saints Row 2 - It actually might have a chance to make 1 mil, but in 2009, a while after it is released. 

Did I miss anything?

Throw Killzone 2 in amongst the possibles. The original Killzone sold 750k in the US alone, despite it's flaws, and the game was marketed more heavily towards and sold much better in the EU, for which we still have no official numbers. According to MotherH, a Guerrilla dev on the PlayStation.com forums, Killzone sold more than 2 million overall.

no you didn't miss anything

the New SONIC game may do "very" well

good list

I feel bad for MLB 08, it's a great game but it has a 0% chance for a million. I could see it breaking half a million, but Sony chose to only release it in the States.

oh yeah

Add killzone 2 to certain

I thought MLB 08 would be released in Asia where baseball is also pretty popular, the chances of making a million just went down and I wouldn't have even added had I known that....

I'll add Killzone 2 to possible because it depends on whether or not it will be released this year.

Depending on how Sony markets the game, that is extremely possible, even if the game is total crap.  Graphics alone could push this in NA, at least.

And that's assuming it's crap. I personally think it will be pretty darn good. :) 

good list, can't think of too many more. Maybe LA Noire?

@makingmusic

Yeah thats what I think

Hype alone will push it to a million

in EU expect a least 500K if its crap, in NA 700K if its... crap

if its darn good, sky's the limit