If you are a member of the Gay Lesbian or Transgender community, then probably
However, basically there's a million apps out there for whatever you want to do. Realistically you shouldn't be making decisions on your iPhone app purchases based on everything on your macbook pro...
Get it, enjoy it...you can't break it, you'll love ios5, and there's an entire community here to help
To get you started heres a few essentials on my iPhone
Tv Guide
Tesco Finder
Dominos pizza
Navfree - UK & ROI (free turn by turn sat nab)
Remote
Speakers (allows you to use your iPhone as an AirTunes receiver (excellent for distributing the same music from your macbook round the house)
Photobucket
Mouse Lite
Twitter (now integrated into iOS5)
Facebook
Skype
BBC News
Wired news
Sky Sports Score Centre
Livescore
The only other notable thing is tvcatchup.com
which is web based, but lets you watch any of the freeview/free satellite channels, over your data connection/wifi
Oh and there are MANY sorts of protective case...i find the screen 'films' to be a complete bloody waste of time tho...
one sexy case is the graft concepts one, but you'll be waiting 6 weeks..and i'm desperately trying to convince people not to buy one, so that it's a basic rarity in the UK.