Hi, I'd like to suggest my shop...
I've been a parts scrounger for many years and I have been looking for the best deals on electronics parts, Arduino compatible boards and modules, etc. on the Shenzhen, China market.
Here's an assortment I put together of the most popular Analog IC,s OptoIsolators, Interface chips, Digital IC's etc.: 70 ICs and 20 diodes for $12.25
http://arduino-direct.com/sunshop/index.php?l=product_detail&p=308
And there are other IC's, Optoelectronics, Resistors, Capacitors, Voltage regulators, Power FETS etc. here:
http://arduino-direct.com/sunshop/index.php?l=product_list&c=15
I would appreciate suggestions of your "favorite" chips that may not be available there.
Many of the chips in the selection were suggested by or verified by people on these forums. Thanks!
DISCLAIMER: Mentioned stuff from my own shop...!