For those always itching to find something to celebrate, here is list of fan-riffic movies that are celebrating anniversaries this year.

5th Year (2001):
Harry Potter and the Sorceror's Stone
The Lord of the Rings: The Fellowship of the Ring
Shrek
Monsters, Inc.
Lara Craft: Tomb Raider
Spy Kids
Jay and Silent Bob Strike Back

10th Year (1996):
Independence Day
Mission: Impossible
Scream
Star Trek: First Contact
Beavis and Butthead Do America
Mars Attacks!

15th Year (1991):
Terminator 2: Judgment Day
Robin Hood: Prince of Thieves
The Addams Family
The Rocketeer
Star Trek VI: The Undiscovered Country

20th Year (1986):
Aliens
Transformers: The Movie
Star Trek IV: The Voyage Home
Ferris Bueller's Day Off
Stand By Me
Short Circuit
The Fly

25th Year (1981):
Raiders of the Lost Ark
Superman II
Stripes
For Your Eyes Only
Time Bandits
Clash of the Titans
Excalibur
The Great Muppet Caper
Escape from New York