Interesting Puzzles

Washington Post Mega Sodoku (daily - 30 day archive) uclick interface- allows notations
Ottawa Citizen Mega Sudoku (daily - 10 day archive) uclick interface - different puzzle
Shockwave Mega Sodoku (M->F - 30 day archive) uclick interface- allows notations

News York Times Crosswords, One per week free - subscription $5.95/mo or $34.95/yr
USAToday Crossword (daily - 14 day archive) Regular and master skill levels - Can save a game
Canoe Network (daily - 30 day archive) Regular and master skill levels - Can save a game
Puzzlers Cave, the online crossword community.
The Sydney Morning Herald Good cryptic and other puzzles
Los Angeles Times 15x15 daily puzzle, 21x21 Sunday, edited Rich Norris & Joyce Nichols Lewis; access is free; software available at site for download; easy to medium difficulty
New York Sun Edited by Peter Gordon. Click "Crosswords" in the left navigation bar
Newsday edited by former Tournament champion Stanley Newman
USA TODAY Puzzles from the Newspaper
Yahoo Crosswords created by CrosSynergy Syndicate puzzles
Washington Post created by CrosSynergy Syndicate puzzles
Philadelphia Online crossword Puzzles from the City of Brotherly Love