'Songs to Backpack to' playlist (on shiny new pink iPod)

I have begun my first difficult task in the planning and preparation for the backpacking trip: a decent playlist on my iPod. Lets face it, if we're travelling by train or bus you can guarantee Naidel will be asleep so i'll need music to keep me occupied, and i'll need music to do my backpack preparation walking to. So, thus, 'Songs to Backpack to' is born. It is largely incomplete as most of my music is quite dated and i dont keep up with the latest music as much as i should. Hopefully Naidel will have some good musical suggestions. Some songs were picked for their apt lyrics, some i just like singing along to. Anyways, here is the list so far:

LA Song - Christian Kane

Waiting - Green Day

Autobiography - Ashlee Simpson

Until My Ship Comes In - Dum Dums

Runaway - Avril Lavigne

Ironic (Isn't It?) - Alanis Morissette
Supermassive Black Hole - Muse

Spin Around - Josie
Skylight - Overseer

In Another Life - Ashlee Simpson
Breakaway - Kelly Clarkson

Army of Two - Dum Dums
In The End - Linkin Park

Tomorrow - Avril Lavigne
Bohemian Like You - Dandy Warhols

Follow Me Home - Sugababes
Transylvanian Concubine - Rasputina

Things I'll Never Say - Avril Lavigne
Crawling - Linkin Park

Wake Up - Rage Against The Machine
Runaway - Halo Friendlies

One Day (I'll Fly Away) - Nicole Kidman
Temptation Waits - Garbage

Feeling Good - Muse
By The Way - Red Hot Chilli Peppers

Boogie 2Nite - Booty Luv
Somebody Told Me - The Killers

If Only She Knew - Michelle Branch
Miss Independent - Kelly Clarkson

Stepping To The Beat - Lazaro
Feel Good Time - P!nk/William Orbit

Love Don't Let Me Go - David Guetta
Suddenly I See - KT Tunstall

My World - Avril Lavigne
Haunted - Evanescence

I Need A Miracle - Cascada
Misfit - Amy Studt

Hey Ya! - Outkast
River's Dance - Firefly OSA

Spybreak! - Propellerheads
I Wonder - Diffuser

Prep For Flight - Serenity OSA
What A Wonderful World - Joey Ramone

Love - Serenity OSA
Disappear - Halo Friendlies

Coming Back For More - Ashlee Simpson
Grace Kelly - Mika

You're A Star - Josie
Holiday - Green Day

Harder To Breathe - Maroon 5
SOS - Rihanna

You Set Me Free - Michelle Branch
Mr. Brightside - The Killers

I Am Me - Ashlee Simpson
I'll Never Tell - OMWF Buffy Cast

Ugly - Sugababes
How To Save A Life - The Fray

The Kind Of Day I've Had - Dum Dums
Listen To Your Heart - DHT feat Edmee

Unwritten - Natasha Beddingfield
Who Knew - P!nk

Defying Gravity - Wicked OSA
La La - Ashlee Simpson

Leave You Far Behind - Lunatic Calm
Basket Case - Green Day

Fragile Heart - Jewel
I'm Not That Girl - Wicked OSA

Everywhere - Michelle Branch
Hitchin A Ride - Green Day

Undiscovered - Ashlee Simpson
Papercut - Linkin Park

Keep Holding On - Avril Lavigne
Nobody Knows - P!nk

Innocence - Avril Lavigne
New Born - Muse

Any suggestions for more music much appreciated :)