The Halo 3 review is like four pages, and MP3 is two, so I can't be bothered to read them all and summarise. So I'll just post the final paragraph and the quotes they highlighted on the page:
"Halo 3 starts out small, keeps it simple, and then just builds and builds and builds into an unstoppable action steamroller"
"Bungie has intensified the ruthless pace and joyous extravagance of it's game to scarcely believable heights"
Posted the summary for that above:
MP3
Not a highlighted quote, but anyway
Corruption spends near half its length recovering from an opening so badly misjudged that you fear developer Retro has forgotten everything that makes Metroid special and run dry of all inspiration. Although it does recover, that's a fear that you never quite manage to shake.
Final Paragraph
Masterful controls aside, Corruption sees Retro lost for a while, like Samus, down some mystifying and convoluted dead-end of it's own making, populating a universe that should have stayed desolate and dead. Eventually it does emerge as a substantial and beautifully engineered adventure, a worthy and welcome Wii blockbuster. But as the conclusion of a trilogy that started so brilliantly, it can't help but disappoint.
And the final paragraph for Singstar
Singstar for the PS3 is a refinement that is a triumph of presentation as well as a winning game. There are some niggling decisions, but they never spoil the experience, and the constant flow of new content makes it a game that will last as long as Sony's console does - that is, if you're prepared to make the financial investment required to maintain a song library.