I have been surfing around the web looking for a good place to look for fun stuff to play and use with my arduino. So far I have really taken a liking to spark fun. Digi-key is meh for browsing, and mouser is okay. Where do you guys get your toys from?
I stopped using Sparkfun after multiple customer service issues with them.
Companies like Digikey and Mouser are focused on distribution to large manufacturing operations. They are good if you need raw components for a project, they tend to be the best bet.
Hobby-focused shops generally have breakout boards, example code for popular platforms, and cool ideas.
I buy mostly from:
www.adafruit.com and
evilmadscience.com
There was a thread where several of us listed favorite sites, I'm not finding it now. So just off the top: Mouser, Jameco, Digi-Key, Digi Intl (for XBees), Adafruit, Sparkfun, DIP Micro, iTead, Evil Mad Science, DorkBotPDX.
Also see: Arduino Playground - Resources
Yeah, you have to get used to Digi-Key. Mouser is kinda similar -- work from a general part type and narrow it down. I haven't ordered a lot of stuff, but no problems with Digi-Key.
Depending on how you feel about sorting through grab bags, electronic gold mine has this sort of stuff.
And if you're not averse to overseas shipping, Yourduino has component assortments which will save you money over ordering bits and pieces here and there -- provided you need what's in them. Terry also has lots of other stuff, and Arduino boards and shields.
I like Adafruit better than Sparkfun. Mostly, keep an eye on price, compared to shops which supply just components -- but sometimes it's very useful to get something, for example a kit, with everything bundled up for what you're doing. That's particularly true if you want to use a chip that's not available in DIP, and you can find it on a breakout board -- yes, it's more expensive, but it can be worth it, rather than soldering SOT-23 or something even smaller. (And yes, you can solder SMD stuff, it just takes some practice, and maybe you'd rather not.)
I've been into Sparkfun too! :)I love it there.Their stuff are cool and of quality in terms of technology.Speaking of being techy I just wanted to share what I have read about an interesting article entitled <<>>. Human and computer hybrids have been a theoretical possibility, but not a real likelihood. Experts, however, have introduced two brand new advancements to light.Well,technology is indeed innovating as it's supposed to be. 8)
Moderator edit: Spam post from a spammer. Marked for deletion.
Oh, Cool. Biological Logic Elements...
Maybe I should be working on an e.coli breakout board??
Not advised for adolescents 
I like to buy most my ics and things of that matter off ebay, it is ridiculously cheap with free shipping most times, and ebay has 90% of anything I've ever looked for
But for things like a display I buy from adafruit simply because it comes with a better background and is easier to use, a touchscreen off ebay sometimes comes across as sketchy compatibility wise
For UK readers, the list at....
www.buildbrighton.com/wiki/Suppliers#UK
.... includes some Good People.
In the US, don't forget...
ModernDevice.com (not moderndeviceS.com, by the way)
www.wulfden.org/TheShoppe/index.shtml
Not in the US? Many of the things we are interested in are tiny, and go through the mail from the US to the UK, anyway, easily and without hassle.
I agree about eBay being good for "stuff"
Disagree about Sparkfun's customer service being poor.... TODAY. Anyway... I rarely need it, as the things I buy there are consistently satisfactory. Several years ago, they seemed to be "getting up to speed".... but I think they are there, now. Their annual deliberate and generous attempts to crash their servers are fun... and suggest GOOD customer support. (They advertise a long way in advance that from a precise time/ date, they will be selling x units of various neat products at VERY low prices, first come, first served. So of course "everyone" logs on an places an order at the same time.... and the time I tried it, the server (and wetware) seemed to cope. At the same time, they donate a chunk of the proceeds from the event to some charities.