'Mad Money Lightning Round': Pull the Trigger on ConocoPhillips

To see the full "Mad Money" Recap, please click here.

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Here's what Jim Cramer had to say about some of the stocks that callers offered up during the "Mad Money Lightning Round" Monday evening:

ConocoPhillips (COP Quote): "With a 4% yield, it is very undervalued. It's very forward looking, have a great management and I think they're a great buy. Pull the trigger and you won't regret it."

Caterpillar (CAT Quote): "I'm a buyer of Caterpillar, even up here. This is an inexpensive stock that's been killed by fears of a global depression. It's a buy."

Allos Therapeutics (ALTH Quote): "That's a heavily speculative stock. I'd consider it as a spec, but not as a trade."

Pantry (PTRY Quote): "If I'm going to buy a convenience store on the road, I'm going to send you to CBRL Group (CBRL Quote) and not with yours. "

Allscripts-Misys (MDRX Quote): "That stock is on the move again. I don't wnat you to be greedy. Take a little off the table. I do bless it though."

Nordic American Tanker (NAT Quote): "I've been supporting their CEO about all of their secondary offerings. I think Nordic American is still a good one."

ISIS Pharmaceuticals (ISIS Quote): "This is strictly a speculative stock. I would buy this one only as a spec as well... just because I believe the market is so strong."

Check out the latest edition of "Cramer's Take on Headline Stocks" on Stockpickr.

*For all you home-gamers, a 'mon-back opportunity means Cramer would back up the figurative truck and load up on a stock.

Want more Cramer? Check out Jim's rules and commandments for investing by clicking here.