Bargain Videogame Tips For Holidays?

Thanks to GamerDad for their editorial discussing the multitude of videogames currently flooding the store shelves, and the knock-on effect for bargain hunters. It's pointed out: "With all the new releases comes a shelf space crunch that means a lot of recent games, some from spring and even later, are getting marked down for quick sales." As an example, the column author "...recently picked up Zone of the Enders: The 2nd Runner, a fantastic action game for PS2, for a measly ten bucks", and he also points out "...a bunch of excellent additions to the Greatest Hits lineup for Sony's machine including Sly Cooper, Ratchet and Clank, Tekken 4 and the brand new Virtua Fighter 4 Evolution." What other cheap console titles can you recommend for a personal early holiday present?