Celebrations in Madden 08 (PS2)? No—Added in Madden 09

No. Player celebrations (touchdown dances, sack dances) were added in Madden NFL 09. Madden 08 on PS2 (and all platforms) only has default post-play animations.

If you want celebrations, play Madden 09 or later on PS3/360/PS4/Xbox One/PC.