Survival definitely needs to be mentioned in the skills-section; if there's a relevant amount of wilderness adventuring going on, you'll want at least one party member with high Survival and Druid with their Wisdom-focus is perfect for the job. If one manages to fit in Track-feat, you'll be much better a tracker than the Ranger simply because you have forms with Scent, magic to aid in the process and complete Wisdom-focus.
Oh yeah, may be worth mentioning that you tend to want some points in Handle Animal to teach your Animal Companion the basic tricks, and at least few to Push it when need be. Also, may be worth pointing to the general direction of the Handle Animal-guide (it's over at 339 at least) of how to raise your own army.
I'm playing a level 6 Human Druid in an online campaign and I'm the party Tank, the party Healer, the party Tracker, the party Face and apparently an Arcane Caster too; can't pull the last off at the same time as the rest yet though - need Quicken Spell and few levels first. Oh yeah, and the party spotter too. All this works just fine while still fitting Extend Spell, Natural Spell, Augment Summoning et co.'
So yea, it's just amazing how many different roles Druid can successfully pull off at once. The character above is basically a party unto himself, lacking only basically a Trapfinder, and there's always the "Summon Creatures"-solution to that (that particular Druid has 3 other party members though...just one is a Warmage and thus doesn't contribute terribly much).
Druid is also by far the PHB class best suited for military warfare (as ironic as it is). They can easily pump Handle Animal and generate an army (they even have a racial +2 bonus to it, and their companion to act as a sort of "general" for the rest along with magic to talk with them) out of them and all the massively destructing spells seem to be found on the Druid list (Control Winds - Tornadoes 4 U!), making Druids extremely efficient at wiping out massive numbers of mooks (which is basically what an army is). A single Druid can literally be a one-man army. And we aren't talking about hundreds or thousands of men worth of power here.