Wortris 

Random letter block will drop down to bottom, just like the tetris game, use left or right arrow key to move the block. When the block drop to the bottom, the correct word(3-8 letters) will be moved. If the new letter block can't drop, game over.
word games puzzle games online games puzzles crossword games

Dougs Word Search 

Create and play your own customized word search puzzles or download puzzles (by the author and other users) from the web directly into the program. Play it "On-Screen" or "On-Paper". Built-in spellchecker. Print your puzzle with a background picture.
word search puzzles games home hobby education teachers shareware asp