Here's a few that come to mind:
Firesteed Pinot Noir (Oregon): Medium body red, good fruit, a bit of astringency to clear grease from the palate, well-received by casual wine drinkers. Low wallet impact, under $10. Serve slightly cool (not cold) on a hot day. Comparable selection: Beringer Founder's Estate Pinot Noir.
Chateau Ste. Michele Pinot Gris (Washington State): Light white, alternative to Chardonnay, but with more flavor than the garden variety Italian Pinot Grigio. Dry, and a bit pétillant (lightly carbonated mouthfeel) with a slight stone fruit bitterness on the back end that might convert a dyed-in-the-wool beer drinker to wine, if only for a hot afternoon. Under $8.
Yalumba Viognier "Y Series" Australia: Another easy-drinking Chardonnay alternative, with flavors more floral and of tropical fruit. Under $10.
Crowd-pleaser cheap-- I mean inexpensive-- whites: Cavit Pinot Grigio (Italy), Jacob's Creek Chardonnay (Australia), Alice White Chardonnay (Australia). On the red side, you can't go wrong with any of the Columbia Crest Two Vines (Washington State) series currently offered.