Instead of posting hundreds of 'top blah blah of 2005' let's get it all in one post.
So, no rules, your bests and worsts of anything music, or slightly music related to do with 2005 all in one massive rambling post.

Here's mine to start you off -

Albums
01 Sufjan Stevens - Illinois
02 The Arcade Fire – Funeral
03 Mew - And the Glass Handed Kites
04 Martin Grech – Unholy
05 Coheed and Cambria - Good Apollo, I'm Burning Star IV, Volume One - From Fear Through the Eyes of Madness
06 Eels – Blinking Lights and Other Revelations
07 System of a Down – Mezmerize/Hypnotize
08 Editors – The Back Room
09 The New Pornographers – Twin Cinema
10 Elbow – Leaders of the Free World

Disappointments
British Sea Power – Open Season
Coldplay – X&Y
Reuben – Very Fast Very Dangerous
Foo Fighters – In Your Honour
A – Teen Dance Ordinance
Weezer – Make Believe

Films
1 Sideways
2 Sin City
3 Batman Begins
4 War of the Worlds
5 The Descent
6 The Life Aquatic
7 Kung Fu Hustle
8 Wallace & Gromit
9 Oldboy

Gigs
01 System of a Down – Brixton Academy
02 Elbow – Birmingham Academy
03 Arcade Fire – Leeds festival
04 Arcade Fire – Birmingham Academy 2
05 Biffy Clyro – Leeds Festival
06 Editors – Leeds Festival
07 Vijay Kishore – Birmingham Barfly
08 Biffy Clyro – Wolverhampton Wulfren
09 Aereogramme – Supersonic Festival
10 Mew - Birmingham Academy 2